sys/cam/scsi/scsi_cd.c

   1 /*-
   2  * Copyright (c) 1997 Justin T. Gibbs.
   3  * Copyright (c) 1997, 1998, 1999, 2000, 2001, 2002, 2003 Kenneth D. Merry.
   4  * All rights reserved.
   5  *
   6  * Redistribution and use in source and binary forms, with or without
   7  * modification, are permitted provided that the following conditions
   8  * are met:
   9  * 1. Redistributions of source code must retain the above copyright
  10  *    notice, this list of conditions, and the following disclaimer,
  11  *    without modification, immediately at the beginning of the file.
  12  * 2. The name of the author may not be used to endorse or promote products
  13  *    derived from this software without specific prior written permission.
  14  *
  15  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
  16  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  17  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  18  * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE FOR
  19  * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  20  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  21  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  22  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  23  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  24  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  25  * SUCH DAMAGE.
  26  */
  27
  28 /*-
  29  * Portions of this driver taken from the original FreeBSD cd driver.
  30  * Written by Julian Elischer (julian@tfs.com)
  31  * for TRW Financial Systems for use under the MACH(2.5) operating system.
  32  *
  33  * TRW Financial Systems, in accordance with their agreement with Carnegie
  34  * Mellon University, makes this software available to CMU to distribute
  35  * or use in any manner that they see fit as long as this message is kept with
  36  * the software. For this reason TFS also grants any other persons or
  37  * organisations permission to use or modify this software.
  38  *
  39  * TFS supplies this software to be publicly redistributed
  40  * on the understanding that TFS is not responsible for the correct
  41  * functioning of this software in any circumstances.
  42  *
  43  * Ported to run under 386BSD by Julian Elischer (julian@tfs.com) Sept 1992
  44  *
  45  *      from: cd.c,v 1.83 1997/05/04 15:24:22 joerg Exp $
  46  */
  47
  48 #include <sys/cdefs.h>
  49 __FBSDID("$FreeBSD$");
  50
  51 #include "opt_cd.h"
  52
  53 #include <sys/param.h>
  54 #include <sys/systm.h>
  55 #include <sys/kernel.h>
  56 #include <sys/bio.h>
  57 #include <sys/conf.h>
  58 #include <sys/disk.h>
  59 #include <sys/malloc.h>
  60 #include <sys/cdio.h>
  61 #include <sys/cdrio.h>
  62 #include <sys/dvdio.h>
  63 #include <sys/devicestat.h>
  64 #include <sys/sysctl.h>
  65 #include <sys/taskqueue.h>
  66 #include <geom/geom_disk.h>
  67
  68 #include <cam/cam.h>
  69 #include <cam/cam_ccb.h>
  70 #include <cam/cam_periph.h>
  71 #include <cam/cam_xpt_periph.h>
  72 #include <cam/cam_queue.h>
  73
  74 #include <cam/scsi/scsi_message.h>
  75 #include <cam/scsi/scsi_da.h>
  76 #include <cam/scsi/scsi_cd.h>
  77
  78 #define LEADOUT         0xaa            /* leadout toc entry */
  79
  80 struct cd_params {
  81         u_int32_t blksize;
  82         u_long    disksize;
  83 };
  84
  85 typedef enum {
  86         CD_Q_NONE               = 0x00,
  87         CD_Q_NO_TOUCH           = 0x01,
  88         CD_Q_BCD_TRACKS         = 0x02,
  89         CD_Q_NO_CHANGER         = 0x04,
  90         CD_Q_CHANGER            = 0x08,
  91         CD_Q_10_BYTE_ONLY       = 0x10
  92 } cd_quirks;
  93
  94 typedef enum {
  95         CD_FLAG_INVALID         = 0x0001,
  96         CD_FLAG_NEW_DISC        = 0x0002,
  97         CD_FLAG_DISC_LOCKED     = 0x0004,
  98         CD_FLAG_DISC_REMOVABLE  = 0x0008,
  99         CD_FLAG_TAGGED_QUEUING  = 0x0010,
 100         CD_FLAG_CHANGER         = 0x0040,
 101         CD_FLAG_ACTIVE          = 0x0080,
 102         CD_FLAG_SCHED_ON_COMP   = 0x0100,
 103         CD_FLAG_RETRY_UA        = 0x0200,
 104         CD_FLAG_VALID_MEDIA     = 0x0400,
 105         CD_FLAG_VALID_TOC       = 0x0800,
 106         CD_FLAG_SCTX_INIT       = 0x1000
 107 } cd_flags;
 108
 109 typedef enum {
 110         CD_CCB_PROBE            = 0x01,
 111         CD_CCB_BUFFER_IO        = 0x02,
 112         CD_CCB_WAITING          = 0x03,
 113         CD_CCB_TYPE_MASK        = 0x0F,
 114         CD_CCB_RETRY_UA         = 0x10
 115 } cd_ccb_state;
 116
 117 typedef enum {
 118         CHANGER_TIMEOUT_SCHED           = 0x01,
 119         CHANGER_SHORT_TMOUT_SCHED       = 0x02,
 120         CHANGER_MANUAL_CALL             = 0x04,
 121         CHANGER_NEED_TIMEOUT            = 0x08
 122 } cd_changer_flags;
 123
 124 #define ccb_state ppriv_field0
 125 #define ccb_bp ppriv_ptr1
 126
 127 struct cd_tocdata {
 128         struct ioc_toc_header header;
 129         struct cd_toc_entry entries[100];
 130 };
 131
 132 struct cd_toc_single {
 133         struct ioc_toc_header header;
 134         struct cd_toc_entry entry;
 135 };
 136
 137 typedef enum {
 138         CD_STATE_PROBE,
 139         CD_STATE_NORMAL
 140 } cd_state;
 141
 142 struct cd_softc {
 143         cam_pinfo               pinfo;
 144         cd_state                state;
 145         volatile cd_flags       flags;
 146         struct bio_queue_head   bio_queue;
 147         LIST_HEAD(, ccb_hdr)    pending_ccbs;
 148         struct cd_params        params;
 149         union ccb               saved_ccb;
 150         cd_quirks               quirks;
 151         STAILQ_ENTRY(cd_softc)  changer_links;
 152         struct cdchanger        *changer;
 153         int                     bufs_left;
 154         struct cam_periph       *periph;
 155         int                     minimum_command_size;
 156         int                     outstanding_cmds;
 157         struct task             sysctl_task;
 158         struct sysctl_ctx_list  sysctl_ctx;
 159         struct sysctl_oid       *sysctl_tree;
 160         STAILQ_HEAD(, cd_mode_params)   mode_queue;
 161         struct cd_tocdata       toc;
 162         struct disk             *disk;
 163 };
 164
 165 struct cd_page_sizes {
 166         int page;
 167         int page_size;
 168 };
 169
 170 static struct cd_page_sizes cd_page_size_table[] =
 171 {
 172         { AUDIO_PAGE, sizeof(struct cd_audio_page)}
 173 };
 174
 175 struct cd_quirk_entry {
 176         struct scsi_inquiry_pattern inq_pat;
 177         cd_quirks quirks;
 178 };
 179
 180 /*
 181  * The changer quirk entries aren't strictly necessary.  Basically, what
 182  * they do is tell cdregister() up front that a device is a changer.
 183  * Otherwise, it will figure that fact out once it sees a LUN on the device
 184  * that is greater than 0.  If it is known up front that a device is a changer,
 185  * all I/O to the device will go through the changer scheduling routines, as
 186  * opposed to the "normal" CD code.
 187  *
 188  * NOTE ON 10_BYTE_ONLY quirks:  Any 10_BYTE_ONLY quirks MUST be because
 189  * your device hangs when it gets a 10 byte command.  Adding a quirk just
 190  * to get rid of the informative diagnostic message is not acceptable.  All
 191  * 10_BYTE_ONLY quirks must be documented in full in a PR (which should be
 192  * referenced in a comment along with the quirk) , and must be approved by
 193  * ken@FreeBSD.org.  Any quirks added that don't adhere to this policy may
 194  * be removed until the submitter can explain why they are needed.
 195  * 10_BYTE_ONLY quirks will be removed (as they will no longer be necessary)
 196  * when the CAM_NEW_TRAN_CODE work is done.
 197  */
 198 static struct cd_quirk_entry cd_quirk_table[] =
 199 {
 200         {
 201                 { T_CDROM, SIP_MEDIA_REMOVABLE, "NRC", "MBR-7", "*"},
 202                  /*quirks*/ CD_Q_CHANGER
 203         },
 204         {
 205                 { T_CDROM, SIP_MEDIA_REMOVABLE, "PIONEER", "CD-ROM DRM*",
 206                   "*"}, /* quirks */ CD_Q_CHANGER
 207         },
 208         {
 209                 { T_CDROM, SIP_MEDIA_REMOVABLE, "NAKAMICH", "MJ-*", "*"},
 210                  /* quirks */ CD_Q_CHANGER
 211         },
 212         {
 213                 { T_CDROM, SIP_MEDIA_REMOVABLE, "CHINON", "CD-ROM CDS-535","*"},
 214                 /* quirks */ CD_Q_BCD_TRACKS
 215         }
 216 };
 217
 218 static  disk_open_t     cdopen;
 219 static  disk_close_t    cdclose;
 220 static  disk_ioctl_t    cdioctl;
 221 static  disk_strategy_t cdstrategy;
 222
 223 static  periph_init_t   cdinit;
 224 static  periph_ctor_t   cdregister;
 225 static  periph_dtor_t   cdcleanup;
 226 static  periph_start_t  cdstart;
 227 static  periph_oninv_t  cdoninvalidate;
 228 static  void            cdasync(void *callback_arg, u_int32_t code,
 229                                 struct cam_path *path, void *arg);
 230 static  int             cdcmdsizesysctl(SYSCTL_HANDLER_ARGS);
 231 static  void            cdshorttimeout(void *arg);
 232 static  void            cdschedule(struct cam_periph *periph, int priority);
 233 static  void            cdrunchangerqueue(void *arg);
 234 static  void            cdchangerschedule(struct cd_softc *softc);
 235 static  int             cdrunccb(union ccb *ccb,
 236                                  int (*error_routine)(union ccb *ccb,
 237                                                       u_int32_t cam_flags,
 238                                                       u_int32_t sense_flags),
 239                                  u_int32_t cam_flags, u_int32_t sense_flags);
 240 static  union ccb       *cdgetccb(struct cam_periph *periph,
 241                                   u_int32_t priority);
 242 static  void            cddone(struct cam_periph *periph,
 243                                union ccb *start_ccb);
 244 static  union cd_pages  *cdgetpage(struct cd_mode_params *mode_params);
 245 static  int             cdgetpagesize(int page_num);
 246 static  void            cdprevent(struct cam_periph *periph, int action);
 247 static  int             cdcheckmedia(struct cam_periph *periph);
 248 static  int             cdsize(struct cam_periph *periph, u_int32_t *size);
 249 static  int             cd6byteworkaround(union ccb *ccb);
 250 static  int             cderror(union ccb *ccb, u_int32_t cam_flags,
 251                                 u_int32_t sense_flags);
 252 static  int             cdreadtoc(struct cam_periph *periph, u_int32_t mode,
 253                                   u_int32_t start, u_int8_t *data,
 254                                   u_int32_t len, u_int32_t sense_flags);
 255 static  int             cdgetmode(struct cam_periph *periph,
 256                                   struct cd_mode_params *data, u_int32_t page);
 257 static  int             cdsetmode(struct cam_periph *periph,
 258                                   struct cd_mode_params *data);
 259 static  int             cdplay(struct cam_periph *periph, u_int32_t blk,
 260                                u_int32_t len);
 261 static  int             cdreadsubchannel(struct cam_periph *periph,
 262                                          u_int32_t mode, u_int32_t format,
 263                                          int track,
 264                                          struct cd_sub_channel_info *data,
 265                                          u_int32_t len);
 266 static  int             cdplaymsf(struct cam_periph *periph, u_int32_t startm,
 267                                   u_int32_t starts, u_int32_t startf,
 268                                   u_int32_t endm, u_int32_t ends,
 269                                   u_int32_t endf);
 270 static  int             cdplaytracks(struct cam_periph *periph,
 271                                      u_int32_t strack, u_int32_t sindex,
 272                                      u_int32_t etrack, u_int32_t eindex);
 273 static  int             cdpause(struct cam_periph *periph, u_int32_t go);
 274 static  int             cdstopunit(struct cam_periph *periph, u_int32_t eject);
 275 static  int             cdstartunit(struct cam_periph *periph, int load);
 276 static  int             cdsetspeed(struct cam_periph *periph,
 277                                    u_int32_t rdspeed, u_int32_t wrspeed);
 278 static  int             cdreportkey(struct cam_periph *periph,
 279                                     struct dvd_authinfo *authinfo);
 280 static  int             cdsendkey(struct cam_periph *periph,
 281                                   struct dvd_authinfo *authinfo);
 282 static  int             cdreaddvdstructure(struct cam_periph *periph,
 283                                            struct dvd_struct *dvdstruct);
 284
 285 static struct periph_driver cddriver =
 286 {
 287         cdinit, "cd",
 288         TAILQ_HEAD_INITIALIZER(cddriver.units), /* generation */ 0
 289 };
 290
 291 PERIPHDRIVER_DECLARE(cd, cddriver);
 292
 293
 294 static int num_changers;
 295
 296 #ifndef CHANGER_MIN_BUSY_SECONDS
 297 #define CHANGER_MIN_BUSY_SECONDS        5
 298 #endif
 299 #ifndef CHANGER_MAX_BUSY_SECONDS
 300 #define CHANGER_MAX_BUSY_SECONDS        15
 301 #endif
 302
 303 static int changer_min_busy_seconds = CHANGER_MIN_BUSY_SECONDS;
 304 static int changer_max_busy_seconds = CHANGER_MAX_BUSY_SECONDS;
 305
 306 SYSCTL_NODE(_kern_cam, OID_AUTO, cd, CTLFLAG_RD, 0, "CAM CDROM driver");
 307 SYSCTL_NODE(_kern_cam_cd, OID_AUTO, changer, CTLFLAG_RD, 0, "CD Changer");
 308 SYSCTL_INT(_kern_cam_cd_changer, OID_AUTO, min_busy_seconds, CTLFLAG_RW,
 309            &changer_min_busy_seconds, 0, "Minimum changer scheduling quantum");
 310 TUNABLE_INT("kern.cam.cd.changer.min_busy_seconds", &changer_min_busy_seconds);
 311 SYSCTL_INT(_kern_cam_cd_changer, OID_AUTO, max_busy_seconds, CTLFLAG_RW,
 312            &changer_max_busy_seconds, 0, "Maximum changer scheduling quantum");
 313 TUNABLE_INT("kern.cam.cd.changer.max_busy_seconds", &changer_max_busy_seconds);
 314
 315 struct cdchanger {
 316         path_id_t                        path_id;
 317         target_id_t                      target_id;
 318         int                              num_devices;
 319         struct camq                      devq;
 320         struct timeval                   start_time;
 321         struct cd_softc                  *cur_device;
 322         struct callout_handle            short_handle;
 323         struct callout_handle            long_handle;
 324         volatile cd_changer_flags        flags;
 325         STAILQ_ENTRY(cdchanger)          changer_links;
 326         STAILQ_HEAD(chdevlist, cd_softc) chluns;
 327 };
 328
 329 static STAILQ_HEAD(changerlist, cdchanger) changerq;
 330
 331
 332 static void
 333 cdinit(void)
 334 {
 335         cam_status status;
 336         struct cam_path *path;
 337
 338         /*
 339          * Install a global async callback.  This callback will
 340          * receive async callbacks like "new device found".
 341          */
 342         status = xpt_create_path(&path, /*periph*/NULL, CAM_XPT_PATH_ID,
 343                                  CAM_TARGET_WILDCARD, CAM_LUN_WILDCARD);
 344
 345         if (status == CAM_REQ_CMP) {
 346                 struct ccb_setasync csa;
 347
 348                 xpt_setup_ccb(&csa.ccb_h, path, /*priority*/5);
 349                 csa.ccb_h.func_code = XPT_SASYNC_CB;
 350                 csa.event_enable = AC_FOUND_DEVICE;
 351                 csa.callback = cdasync;
 352                 csa.callback_arg = NULL;
 353                 xpt_action((union ccb *)&csa);
 354                 status = csa.ccb_h.status;
 355                 xpt_free_path(path);
 356         }
 357
 358         if (status != CAM_REQ_CMP) {
 359                 printf("cd: Failed to attach master async callback "
 360                        "due to status 0x%x!\n", status);
 361         }
 362 }
 363
 364 static void
 365 cdoninvalidate(struct cam_periph *periph)
 366 {
 367         int s;
 368         struct cd_softc *softc;
 369         struct ccb_setasync csa;
 370
 371         softc = (struct cd_softc *)periph->softc;
 372
 373         /*
 374          * De-register any async callbacks.
 375          */
 376         xpt_setup_ccb(&csa.ccb_h, periph->path,
 377                       /* priority */ 5);
 378         csa.ccb_h.func_code = XPT_SASYNC_CB;
 379         csa.event_enable = 0;
 380         csa.callback = cdasync;
 381         csa.callback_arg = periph;
 382         xpt_action((union ccb *)&csa);
 383
 384         softc->flags |= CD_FLAG_INVALID;
 385
 386         /*
 387          * Although the oninvalidate() routines are always called at
 388          * splsoftcam, we need to be at splbio() here to keep the buffer
 389          * queue from being modified while we traverse it.
 390          */
 391         s = splbio();
 392
 393         /*
 394          * Return all queued I/O with ENXIO.
 395          * XXX Handle any transactions queued to the card
 396          *     with XPT_ABORT_CCB.
 397          */
 398         bioq_flush(&softc->bio_queue, NULL, ENXIO);
 399         splx(s);
 400
 401         /*
 402          * If this device is part of a changer, and it was scheduled
 403          * to run, remove it from the run queue since we just nuked
 404          * all of its scheduled I/O.
 405          */
 406         if ((softc->flags & CD_FLAG_CHANGER)
 407          && (softc->pinfo.index != CAM_UNQUEUED_INDEX))
 408                 camq_remove(&softc->changer->devq, softc->pinfo.index);
 409
 410         xpt_print_path(periph->path);
 411         printf("lost device\n");
 412 }
 413
 414 static void
 415 cdcleanup(struct cam_periph *periph)
 416 {
 417         struct cd_softc *softc;
 418         int s;
 419
 420         softc = (struct cd_softc *)periph->softc;
 421
 422         xpt_print_path(periph->path);
 423         printf("removing device entry\n");
 424
 425         if ((softc->flags & CD_FLAG_SCTX_INIT) != 0
 426             && sysctl_ctx_free(&softc->sysctl_ctx) != 0) {
 427                 xpt_print_path(periph->path);
 428                 printf("can't remove sysctl context\n");
 429         }
 430
 431         s = splsoftcam();
 432         /*
 433          * In the queued, non-active case, the device in question
 434          * has already been removed from the changer run queue.  Since this
 435          * device is active, we need to de-activate it, and schedule
 436          * another device to run.  (if there is another one to run)
 437          */
 438         if ((softc->flags & CD_FLAG_CHANGER)
 439          && (softc->flags & CD_FLAG_ACTIVE)) {
 440
 441                 /*
 442                  * The purpose of the short timeout is soley to determine
 443                  * whether the current device has finished or not.  Well,
 444                  * since we're removing the active device, we know that it
 445                  * is finished.  So, get rid of the short timeout.
 446                  * Otherwise, if we're in the time period before the short
 447                  * timeout fires, and there are no other devices in the
 448                  * queue to run, there won't be any other device put in the
 449                  * active slot.  i.e., when we call cdrunchangerqueue()
 450                  * below, it won't do anything.  Then, when the short
 451                  * timeout fires, it'll look at the "current device", which
 452                  * we are free below, and possibly panic the kernel on a
 453                  * bogus pointer reference.
 454                  *
 455                  * The long timeout doesn't really matter, since we
 456                  * decrement the qfrozen_cnt to indicate that there is
 457                  * nothing in the active slot now.  Therefore, there won't
 458                  * be any bogus pointer references there.
 459                  */
 460                 if (softc->changer->flags & CHANGER_SHORT_TMOUT_SCHED) {
 461                         untimeout(cdshorttimeout, softc->changer,
 462                                   softc->changer->short_handle);
 463                         softc->changer->flags &= ~CHANGER_SHORT_TMOUT_SCHED;
 464                 }
 465                 softc->changer->devq.qfrozen_cnt--;
 466                 softc->changer->flags |= CHANGER_MANUAL_CALL;
 467                 cdrunchangerqueue(softc->changer);
 468         }
 469
 470         /*
 471          * If we're removing the last device on the changer, go ahead and
 472          * remove the changer device structure.
 473          */
 474         if ((softc->flags & CD_FLAG_CHANGER)
 475          && (--softc->changer->num_devices == 0)) {
 476
 477                 /*
 478                  * Theoretically, there shouldn't be any timeouts left, but
 479                  * I'm not completely sure that that will be the case.  So,
 480                  * it won't hurt to check and see if there are any left.
 481                  */
 482                 if (softc->changer->flags & CHANGER_TIMEOUT_SCHED) {
 483                         untimeout(cdrunchangerqueue, softc->changer,
 484                                   softc->changer->long_handle);
 485                         softc->changer->flags &= ~CHANGER_TIMEOUT_SCHED;
 486                 }
 487
 488                 if (softc->changer->flags & CHANGER_SHORT_TMOUT_SCHED) {
 489                         untimeout(cdshorttimeout, softc->changer,
 490                                   softc->changer->short_handle);
 491                         softc->changer->flags &= ~CHANGER_SHORT_TMOUT_SCHED;
 492                 }
 493
 494                 STAILQ_REMOVE(&changerq, softc->changer, cdchanger,
 495                               changer_links);
 496                 xpt_print_path(periph->path);
 497                 printf("removing changer entry\n");
 498                 free(softc->changer, M_DEVBUF);
 499                 num_changers--;
 500         }
 501         disk_destroy(softc->disk);
 502         free(softc, M_DEVBUF);
 503         splx(s);
 504 }
 505
 506 static void
 507 cdasync(void *callback_arg, u_int32_t code,
 508         struct cam_path *path, void *arg)
 509 {
 510         struct cam_periph *periph;
 511
 512         periph = (struct cam_periph *)callback_arg;
 513         switch (code) {
 514         case AC_FOUND_DEVICE:
 515         {
 516                 struct ccb_getdev *cgd;
 517                 cam_status status;
 518
 519                 cgd = (struct ccb_getdev *)arg;
 520                 if (cgd == NULL)
 521                         break;
 522
 523                 if (SID_TYPE(&cgd->inq_data) != T_CDROM
 524                     && SID_TYPE(&cgd->inq_data) != T_WORM)
 525                         break;
 526
 527                 /*
 528                  * Allocate a peripheral instance for
 529                  * this device and start the probe
 530                  * process.
 531                  */
 532                 status = cam_periph_alloc(cdregister, cdoninvalidate,
 533                                           cdcleanup, cdstart,
 534                                           "cd", CAM_PERIPH_BIO,
 535                                           cgd->ccb_h.path, cdasync,
 536                                           AC_FOUND_DEVICE, cgd);
 537
 538                 if (status != CAM_REQ_CMP
 539                  && status != CAM_REQ_INPROG)
 540                         printf("cdasync: Unable to attach new device "
 541                                "due to status 0x%x\n", status);
 542
 543                 break;
 544         }
 545         case AC_SENT_BDR:
 546         case AC_BUS_RESET:
 547         {
 548                 struct cd_softc *softc;
 549                 struct ccb_hdr *ccbh;
 550                 int s;
 551
 552                 softc = (struct cd_softc *)periph->softc;
 553                 s = splsoftcam();
 554                 /*
 555                  * Don't fail on the expected unit attention
 556                  * that will occur.
 557                  */
 558                 softc->flags |= CD_FLAG_RETRY_UA;
 559                 LIST_FOREACH(ccbh, &softc->pending_ccbs, periph_links.le)
 560                         ccbh->ccb_state |= CD_CCB_RETRY_UA;
 561                 splx(s);
 562                 /* FALLTHROUGH */
 563         }
 564         default:
 565                 cam_periph_async(periph, code, path, arg);
 566                 break;
 567         }
 568 }
 569
 570 static void
 571 cdsysctlinit(void *context, int pending)
 572 {
 573         struct cam_periph *periph;
 574         struct cd_softc *softc;
 575         char tmpstr[80], tmpstr2[80];
 576
 577         periph = (struct cam_periph *)context;
 578         softc = (struct cd_softc *)periph->softc;
 579
 580         snprintf(tmpstr, sizeof(tmpstr), "CAM CD unit %d", periph->unit_number);
 581         snprintf(tmpstr2, sizeof(tmpstr2), "%d", periph->unit_number);
 582
 583         mtx_lock(&Giant);
 584
 585         sysctl_ctx_init(&softc->sysctl_ctx);
 586         softc->flags |= CD_FLAG_SCTX_INIT;
 587         softc->sysctl_tree = SYSCTL_ADD_NODE(&softc->sysctl_ctx,
 588                 SYSCTL_STATIC_CHILDREN(_kern_cam_cd), OID_AUTO,
 589                 tmpstr2, CTLFLAG_RD, 0, tmpstr);
 590
 591         if (softc->sysctl_tree == NULL) {
 592                 printf("cdsysctlinit: unable to allocate sysctl tree\n");
 593                 return;
 594         }
 595
 596         /*
 597          * Now register the sysctl handler, so the user can the value on
 598          * the fly.
 599          */
 600         SYSCTL_ADD_PROC(&softc->sysctl_ctx,SYSCTL_CHILDREN(softc->sysctl_tree),
 601                 OID_AUTO, "minimum_cmd_size", CTLTYPE_INT | CTLFLAG_RW,
 602                 &softc->minimum_command_size, 0, cdcmdsizesysctl, "I",
 603                 "Minimum CDB size");
 604
 605         mtx_unlock(&Giant);
 606 }
 607
 608 /*
 609  * We have a handler function for this so we can check the values when the
 610  * user sets them, instead of every time we look at them.
 611  */
 612 static int
 613 cdcmdsizesysctl(SYSCTL_HANDLER_ARGS)
 614 {
 615         int error, value;
 616
 617         value = *(int *)arg1;
 618
 619         error = sysctl_handle_int(oidp, &value, 0, req);
 620
 621         if ((error != 0)
 622          || (req->newptr == NULL))
 623                 return (error);
 624
 625         /*
 626          * The only real values we can have here are 6 or 10.  I don't
 627          * really forsee having 12 be an option at any time in the future.
 628          * So if the user sets something less than or equal to 6, we'll set
 629          * it to 6.  If he sets something greater than 6, we'll set it to 10.
 630          *
 631          * I suppose we could just return an error here for the wrong values,
 632          * but I don't think it's necessary to do so, as long as we can
 633          * determine the user's intent without too much trouble.
 634          */
 635         if (value < 6)
 636                 value = 6;
 637         else if (value > 6)
 638                 value = 10;
 639
 640         *(int *)arg1 = value;
 641
 642         return (0);
 643 }
 644
 645 static cam_status
 646 cdregister(struct cam_periph *periph, void *arg)
 647 {
 648         struct cd_softc *softc;
 649         struct ccb_setasync csa;
 650         struct ccb_pathinq cpi;
 651         struct ccb_getdev *cgd;
 652         char tmpstr[80];
 653         caddr_t match;
 654
 655         cgd = (struct ccb_getdev *)arg;
 656         if (periph == NULL) {
 657                 printf("cdregister: periph was NULL!!\n");
 658                 return(CAM_REQ_CMP_ERR);
 659         }
 660         if (cgd == NULL) {
 661                 printf("cdregister: no getdev CCB, can't register device\n");
 662                 return(CAM_REQ_CMP_ERR);
 663         }
 664
 665         softc = (struct cd_softc *)malloc(sizeof(*softc),M_DEVBUF,M_NOWAIT);
 666
 667         if (softc == NULL) {
 668                 printf("cdregister: Unable to probe new device. "
 669                        "Unable to allocate softc\n");
 670                 return(CAM_REQ_CMP_ERR);
 671         }
 672
 673         bzero(softc, sizeof(*softc));
 674         LIST_INIT(&softc->pending_ccbs);
 675         STAILQ_INIT(&softc->mode_queue);
 676         softc->state = CD_STATE_PROBE;
 677         bioq_init(&softc->bio_queue);
 678         if (SID_IS_REMOVABLE(&cgd->inq_data))
 679                 softc->flags |= CD_FLAG_DISC_REMOVABLE;
 680         if ((cgd->inq_data.flags & SID_CmdQue) != 0)
 681                 softc->flags |= CD_FLAG_TAGGED_QUEUING;
 682
 683         periph->softc = softc;
 684         softc->periph = periph;
 685
 686         /*
 687          * See if this device has any quirks.
 688          */
 689         match = cam_quirkmatch((caddr_t)&cgd->inq_data,
 690                                (caddr_t)cd_quirk_table,
 691                                sizeof(cd_quirk_table)/sizeof(*cd_quirk_table),
 692                                sizeof(*cd_quirk_table), scsi_inquiry_match);
 693
 694         if (match != NULL)
 695                 softc->quirks = ((struct cd_quirk_entry *)match)->quirks;
 696         else
 697                 softc->quirks = CD_Q_NONE;
 698
 699         /* Check if the SIM does not want 6 byte commands */
 700         xpt_setup_ccb(&cpi.ccb_h, periph->path, /*priority*/1);
 701         cpi.ccb_h.func_code = XPT_PATH_INQ;
 702         xpt_action((union ccb *)&cpi);
 703         if (cpi.ccb_h.status == CAM_REQ_CMP && (cpi.hba_misc & PIM_NO_6_BYTE))
 704                 softc->quirks |= CD_Q_10_BYTE_ONLY;
 705
 706         TASK_INIT(&softc->sysctl_task, 0, cdsysctlinit, periph);
 707
 708         /* The default is 6 byte commands, unless quirked otherwise */
 709         if (softc->quirks & CD_Q_10_BYTE_ONLY)
 710                 softc->minimum_command_size = 10;
 711         else
 712                 softc->minimum_command_size = 6;
 713
 714         /*
 715          * Load the user's default, if any.
 716          */
 717         snprintf(tmpstr, sizeof(tmpstr), "kern.cam.cd.%d.minimum_cmd_size",
 718                  periph->unit_number);
 719         TUNABLE_INT_FETCH(tmpstr, &softc->minimum_command_size);
 720
 721         /* 6 and 10 are the only permissible values here. */
 722         if (softc->minimum_command_size < 6)
 723                 softc->minimum_command_size = 6;
 724         else if (softc->minimum_command_size > 6)
 725                 softc->minimum_command_size = 10;
 726
 727         /*
 728          * We need to register the statistics structure for this device,
 729          * but we don't have the blocksize yet for it.  So, we register
 730          * the structure and indicate that we don't have the blocksize
 731          * yet.  Unlike other SCSI peripheral drivers, we explicitly set
 732          * the device type here to be CDROM, rather than just ORing in
 733          * the device type.  This is because this driver can attach to either
 734          * CDROM or WORM devices, and we want this peripheral driver to
 735          * show up in the devstat list as a CD peripheral driver, not a
 736          * WORM peripheral driver.  WORM drives will also have the WORM
 737          * driver attached to them.
 738          */
 739         softc->disk = disk_alloc();
 740         softc->disk->d_devstat = devstat_new_entry("cd",
 741                           periph->unit_number, 0,
 742                           DEVSTAT_BS_UNAVAILABLE,
 743                           DEVSTAT_TYPE_CDROM | DEVSTAT_TYPE_IF_SCSI,
 744                           DEVSTAT_PRIORITY_CD);
 745         softc->disk->d_open = cdopen;
 746         softc->disk->d_close = cdclose;
 747         softc->disk->d_strategy = cdstrategy;
 748         softc->disk->d_ioctl = cdioctl;
 749         softc->disk->d_name = "cd";
 750         softc->disk->d_unit = periph->unit_number;
 751         softc->disk->d_drv1 = periph;
 752         softc->disk->d_flags = DISKFLAG_NEEDSGIANT;
 753         disk_create(softc->disk, DISK_VERSION);
 754
 755         /*
 756          * Add an async callback so that we get
 757          * notified if this device goes away.
 758          */
 759         xpt_setup_ccb(&csa.ccb_h, periph->path,
 760                       /* priority */ 5);
 761         csa.ccb_h.func_code = XPT_SASYNC_CB;
 762         csa.event_enable = AC_SENT_BDR | AC_BUS_RESET | AC_LOST_DEVICE;
 763         csa.callback = cdasync;
 764         csa.callback_arg = periph;
 765         xpt_action((union ccb *)&csa);
 766
 767         /*
 768          * If the target lun is greater than 0, we most likely have a CD
 769          * changer device.  Check the quirk entries as well, though, just
 770          * in case someone has a CD tower with one lun per drive or
 771          * something like that.  Also, if we know up front that a
 772          * particular device is a changer, we can mark it as such starting
 773          * with lun 0, instead of lun 1.  It shouldn't be necessary to have
 774          * a quirk entry to define something as a changer, however.
 775          */
 776         if (((cgd->ccb_h.target_lun > 0)
 777           && ((softc->quirks & CD_Q_NO_CHANGER) == 0))
 778          || ((softc->quirks & CD_Q_CHANGER) != 0)) {
 779                 struct cdchanger *nchanger;
 780                 struct cam_periph *nperiph;
 781                 struct cam_path *path;
 782                 cam_status status;
 783                 int found;
 784
 785                 /* Set the changer flag in the current device's softc */
 786                 softc->flags |= CD_FLAG_CHANGER;
 787
 788                 if (num_changers == 0)
 789                         STAILQ_INIT(&changerq);
 790
 791                 /*
 792                  * Now, look around for an existing changer device with the
 793                  * same path and target ID as the current device.
 794                  */
 795                 for (found = 0,
 796                      nchanger = (struct cdchanger *)STAILQ_FIRST(&changerq);
 797                      nchanger != NULL;
 798                      nchanger = STAILQ_NEXT(nchanger, changer_links)){
 799                         if ((nchanger->path_id == cgd->ccb_h.path_id)
 800                          && (nchanger->target_id == cgd->ccb_h.target_id)) {
 801                                 found = 1;
 802                                 break;
 803                         }
 804                 }
 805
 806                 /*
 807                  * If we found a matching entry, just add this device to
 808                  * the list of devices on this changer.
 809                  */
 810                 if (found == 1) {
 811                         struct chdevlist *chlunhead;
 812
 813                         chlunhead = &nchanger->chluns;
 814
 815                         /*
 816                          * XXX KDM look at consolidating this code with the
 817                          * code below in a separate function.
 818                          */
 819
 820                         /*
 821                          * Create a path with lun id 0, and see if we can
 822                          * find a matching device
 823                          */
 824                         status = xpt_create_path(&path, /*periph*/ periph,
 825                                                  cgd->ccb_h.path_id,
 826                                                  cgd->ccb_h.target_id, 0);
 827
 828                         if ((status == CAM_REQ_CMP)
 829                          && ((nperiph = cam_periph_find(path, "cd")) != NULL)){
 830                                 struct cd_softc *nsoftc;
 831
 832                                 nsoftc = (struct cd_softc *)nperiph->softc;
 833
 834                                 if ((nsoftc->flags & CD_FLAG_CHANGER) == 0){
 835                                         nsoftc->flags |= CD_FLAG_CHANGER;
 836                                         nchanger->num_devices++;
 837                                         if (camq_resize(&nchanger->devq,
 838                                            nchanger->num_devices)!=CAM_REQ_CMP){
 839                                                 printf("cdregister: "
 840                                                        "camq_resize "
 841                                                        "failed, changer "
 842                                                        "support may "
 843                                                        "be messed up\n");
 844                                         }
 845                                         nsoftc->changer = nchanger;
 846                                         nsoftc->pinfo.index =CAM_UNQUEUED_INDEX;
 847
 848                                         STAILQ_INSERT_TAIL(&nchanger->chluns,
 849                                                           nsoftc,changer_links);
 850                                 }
 851                                 xpt_free_path(path);
 852                         } else if (status == CAM_REQ_CMP)
 853                                 xpt_free_path(path);
 854                         else {
 855                                 printf("cdregister: unable to allocate path\n"
 856                                        "cdregister: changer support may be "
 857                                        "broken\n");
 858                         }
 859
 860                         nchanger->num_devices++;
 861
 862                         softc->changer = nchanger;
 863                         softc->pinfo.index = CAM_UNQUEUED_INDEX;
 864
 865                         if (camq_resize(&nchanger->devq,
 866                             nchanger->num_devices) != CAM_REQ_CMP) {
 867                                 printf("cdregister: camq_resize "
 868                                        "failed, changer support may "
 869                                        "be messed up\n");
 870                         }
 871
 872                         STAILQ_INSERT_TAIL(chlunhead, softc, changer_links);
 873                 }
 874                 /*
 875                  * In this case, we don't already have an entry for this
 876                  * particular changer, so we need to create one, add it to
 877                  * the queue, and queue this device on the list for this
 878                  * changer.  Before we queue this device, however, we need
 879                  * to search for lun id 0 on this target, and add it to the
 880                  * queue first, if it exists.  (and if it hasn't already
 881                  * been marked as part of the changer.)
 882                  */
 883                 else {
 884                         nchanger = malloc(sizeof(struct cdchanger),
 885                                 M_DEVBUF, M_NOWAIT);
 886
 887                         if (nchanger == NULL) {
 888                                 softc->flags &= ~CD_FLAG_CHANGER;
 889                                 printf("cdregister: unable to malloc "
 890                                        "changer structure\ncdregister: "
 891                                        "changer support disabled\n");
 892
 893                                 /*
 894                                  * Yes, gotos can be gross but in this case
 895                                  * I think it's justified..
 896                                  */
 897                                 goto cdregisterexit;
 898                         }
 899
 900                         /* zero the structure */
 901                         bzero(nchanger, sizeof(struct cdchanger));
 902
 903                         if (camq_init(&nchanger->devq, 1) != 0) {
 904                                 softc->flags &= ~CD_FLAG_CHANGER;
 905                                 printf("cdregister: changer support "
 906                                        "disabled\n");
 907                                 goto cdregisterexit;
 908                         }
 909
 910                         num_changers++;
 911
 912                         nchanger->path_id = cgd->ccb_h.path_id;
 913                         nchanger->target_id = cgd->ccb_h.target_id;
 914
 915                         /* this is superfluous, but it makes things clearer */
 916                         nchanger->num_devices = 0;
 917
 918                         STAILQ_INIT(&nchanger->chluns);
 919
 920                         STAILQ_INSERT_TAIL(&changerq, nchanger,
 921                                            changer_links);
 922
 923                         /*
 924                          * Create a path with lun id 0, and see if we can
 925                          * find a matching device
 926                          */
 927                         status = xpt_create_path(&path, /*periph*/ periph,
 928                                                  cgd->ccb_h.path_id,
 929                                                  cgd->ccb_h.target_id, 0);
 930
 931                         /*
 932                          * If we were able to allocate the path, and if we
 933                          * find a matching device and it isn't already
 934                          * marked as part of a changer, then we add it to
 935                          * the current changer.
 936                          */
 937                         if ((status == CAM_REQ_CMP)
 938                          && ((nperiph = cam_periph_find(path, "cd")) != NULL)
 939                          && ((((struct cd_softc *)periph->softc)->flags &
 940                                CD_FLAG_CHANGER) == 0)) {
 941                                 struct cd_softc *nsoftc;
 942
 943                                 nsoftc = (struct cd_softc *)nperiph->softc;
 944
 945                                 nsoftc->flags |= CD_FLAG_CHANGER;
 946                                 nchanger->num_devices++;
 947                                 if (camq_resize(&nchanger->devq,
 948                                     nchanger->num_devices) != CAM_REQ_CMP) {
 949                                         printf("cdregister: camq_resize "
 950                                                "failed, changer support may "
 951                                                "be messed up\n");
 952                                 }
 953                                 nsoftc->changer = nchanger;
 954                                 nsoftc->pinfo.index = CAM_UNQUEUED_INDEX;
 955
 956                                 STAILQ_INSERT_TAIL(&nchanger->chluns,
 957                                                    nsoftc, changer_links);
 958                                 xpt_free_path(path);
 959                         } else if (status == CAM_REQ_CMP)
 960                                 xpt_free_path(path);
 961                         else {
 962                                 printf("cdregister: unable to allocate path\n"
 963                                        "cdregister: changer support may be "
 964                                        "broken\n");
 965                         }
 966
 967                         softc->changer = nchanger;
 968                         softc->pinfo.index = CAM_UNQUEUED_INDEX;
 969                         nchanger->num_devices++;
 970                         if (camq_resize(&nchanger->devq,
 971                             nchanger->num_devices) != CAM_REQ_CMP) {
 972                                 printf("cdregister: camq_resize "
 973                                        "failed, changer support may "
 974                                        "be messed up\n");
 975                         }
 976                         STAILQ_INSERT_TAIL(&nchanger->chluns, softc,
 977                                            changer_links);
 978                 }
 979         }
 980
 981 cdregisterexit:
 982
 983         /* Lock this peripheral until we are setup */
 984         /* Can't block */
 985         cam_periph_lock(periph, PRIBIO);
 986
 987         if ((softc->flags & CD_FLAG_CHANGER) == 0)
 988                 xpt_schedule(periph, /*priority*/5);
 989         else
 990                 cdschedule(periph, /*priority*/ 5);
 991
 992         return(CAM_REQ_CMP);
 993 }
 994
 995 static int
 996 cdopen(struct disk *dp)
 997 {
 998         struct cam_periph *periph;
 999         struct cd_softc *softc;
1000         int error;
1001         int s;
1002
1003         periph = (struct cam_periph *)dp->d_drv1;
1004         if (periph == NULL)
1005                 return (ENXIO);
1006
1007         softc = (struct cd_softc *)periph->softc;
1008
1009         /*
1010          * Grab splsoftcam and hold it until we lock the peripheral.
1011          */
1012         s = splsoftcam();
1013         if (softc->flags & CD_FLAG_INVALID) {
1014                 splx(s);
1015                 return(ENXIO);
1016         }
1017
1018         if ((error = cam_periph_lock(periph, PRIBIO | PCATCH)) != 0) {
1019                 splx(s);
1020                 return (error);
1021         }
1022
1023         splx(s);
1024
1025         if (cam_periph_acquire(periph) != CAM_REQ_CMP)
1026                 return(ENXIO);
1027
1028         /*
1029          * Check for media, and set the appropriate flags.  We don't bail
1030          * if we don't have media, but then we don't allow anything but the
1031          * CDIOCEJECT/CDIOCCLOSE ioctls if there is no media.
1032          */
1033         cdcheckmedia(periph);
1034
1035         cam_periph_unlock(periph);
1036
1037         CAM_DEBUG(periph->path, CAM_DEBUG_TRACE, ("leaving cdopen\n"));
1038
1039         return (error);
1040 }
1041
1042 static int
1043 cdclose(struct disk *dp)
1044 {
1045         struct  cam_periph *periph;
1046         struct  cd_softc *softc;
1047         int     error;
1048
1049         periph = (struct cam_periph *)dp->d_drv1;
1050         if (periph == NULL)
1051                 return (ENXIO);
1052
1053         softc = (struct cd_softc *)periph->softc;
1054
1055         if ((error = cam_periph_lock(periph, PRIBIO)) != 0)
1056                 return (error);
1057
1058         if ((softc->flags & CD_FLAG_DISC_REMOVABLE) != 0)
1059                 cdprevent(periph, PR_ALLOW);
1060
1061         /*
1062          * Since we're closing this CD, mark the blocksize as unavailable.
1063          * It will be marked as available when the CD is opened again.
1064          */
1065         softc->disk->d_devstat->flags |= DEVSTAT_BS_UNAVAILABLE;
1066
1067         /*
1068          * We'll check the media and toc again at the next open().
1069          */
1070         softc->flags &= ~(CD_FLAG_VALID_MEDIA|CD_FLAG_VALID_TOC);
1071
1072         cam_periph_unlock(periph);
1073         cam_periph_release(periph);
1074
1075         return (0);
1076 }
1077
1078 static void
1079 cdshorttimeout(void *arg)
1080 {
1081         struct cdchanger *changer;
1082         int s;
1083
1084         s = splsoftcam();
1085
1086         changer = (struct cdchanger *)arg;
1087
1088         /* Always clear the short timeout flag, since that's what we're in */
1089         changer->flags &= ~CHANGER_SHORT_TMOUT_SCHED;
1090
1091         /*
1092          * Check to see if there is any more pending or outstanding I/O for
1093          * this device.  If not, move it out of the active slot.
1094          */
1095         if ((bioq_first(&changer->cur_device->bio_queue) == NULL)
1096          && (changer->cur_device->outstanding_cmds == 0)) {
1097                 changer->flags |= CHANGER_MANUAL_CALL;
1098                 cdrunchangerqueue(changer);
1099         }
1100
1101         splx(s);
1102 }
1103
1104 /*
1105  * This is a wrapper for xpt_schedule.  It only applies to changers.
1106  */
1107 static void
1108 cdschedule(struct cam_periph *periph, int priority)
1109 {
1110         struct cd_softc *softc;
1111         int s;
1112
1113         s = splsoftcam();
1114
1115         softc = (struct cd_softc *)periph->softc;
1116
1117         /*
1118          * If this device isn't currently queued, and if it isn't
1119          * the active device, then we queue this device and run the
1120          * changer queue if there is no timeout scheduled to do it.
1121          * If this device is the active device, just schedule it
1122          * to run again.  If this device is queued, there should be
1123          * a timeout in place already that will make sure it runs.
1124          */
1125         if ((softc->pinfo.index == CAM_UNQUEUED_INDEX)
1126          && ((softc->flags & CD_FLAG_ACTIVE) == 0)) {
1127                 /*
1128                  * We don't do anything with the priority here.
1129                  * This is strictly a fifo queue.
1130                  */
1131                 softc->pinfo.priority = 1;
1132                 softc->pinfo.generation = ++softc->changer->devq.generation;
1133                 camq_insert(&softc->changer->devq, (cam_pinfo *)softc);
1134
1135                 /*
1136                  * Since we just put a device in the changer queue,
1137                  * check and see if there is a timeout scheduled for
1138                  * this changer.  If so, let the timeout handle
1139                  * switching this device into the active slot.  If
1140                  * not, manually call the timeout routine to
1141                  * bootstrap things.
1142                  */
1143                 if (((softc->changer->flags & CHANGER_TIMEOUT_SCHED)==0)
1144                  && ((softc->changer->flags & CHANGER_NEED_TIMEOUT)==0)
1145                  && ((softc->changer->flags & CHANGER_SHORT_TMOUT_SCHED)==0)){
1146                         softc->changer->flags |= CHANGER_MANUAL_CALL;
1147                         cdrunchangerqueue(softc->changer);
1148                 }
1149         } else if ((softc->flags & CD_FLAG_ACTIVE)
1150                 && ((softc->flags & CD_FLAG_SCHED_ON_COMP) == 0))
1151                 xpt_schedule(periph, priority);
1152
1153         splx(s);
1154
1155 }
1156
1157 static void
1158 cdrunchangerqueue(void *arg)
1159 {
1160         struct cd_softc *softc;
1161         struct cdchanger *changer;
1162         int called_from_timeout;
1163         int s;
1164
1165         s = splsoftcam();
1166
1167         changer = (struct cdchanger *)arg;
1168
1169         /*
1170          * If we have NOT been called from cdstrategy() or cddone(), and
1171          * instead from a timeout routine, go ahead and clear the
1172          * timeout flag.
1173          */
1174         if ((changer->flags & CHANGER_MANUAL_CALL) == 0) {
1175                 changer->flags &= ~CHANGER_TIMEOUT_SCHED;
1176                 called_from_timeout = 1;
1177         } else
1178                 called_from_timeout = 0;
1179
1180         /* Always clear the manual call flag */
1181         changer->flags &= ~CHANGER_MANUAL_CALL;
1182
1183         /* nothing to do if the queue is empty */
1184         if (changer->devq.entries <= 0) {
1185                 splx(s);
1186                 return;
1187         }
1188
1189         /*
1190          * If the changer queue is frozen, that means we have an active
1191          * device.
1192          */
1193         if (changer->devq.qfrozen_cnt > 0) {
1194
1195                 if (changer->cur_device->outstanding_cmds > 0) {
1196                         changer->cur_device->flags |= CD_FLAG_SCHED_ON_COMP;
1197                         changer->cur_device->bufs_left =
1198                                 changer->cur_device->outstanding_cmds;
1199                         if (called_from_timeout) {
1200                                 changer->long_handle =
1201                                         timeout(cdrunchangerqueue, changer,
1202                                         changer_max_busy_seconds * hz);
1203                                 changer->flags |= CHANGER_TIMEOUT_SCHED;
1204                         }
1205                         splx(s);
1206                         return;
1207                 }
1208
1209                 /*
1210                  * We always need to reset the frozen count and clear the
1211                  * active flag.
1212                  */
1213                 changer->devq.qfrozen_cnt--;
1214                 changer->cur_device->flags &= ~CD_FLAG_ACTIVE;
1215                 changer->cur_device->flags &= ~CD_FLAG_SCHED_ON_COMP;
1216
1217                 /*
1218                  * Check to see whether the current device has any I/O left
1219                  * to do.  If so, requeue it at the end of the queue.  If
1220                  * not, there is no need to requeue it.
1221                  */
1222                 if (bioq_first(&changer->cur_device->bio_queue) != NULL) {
1223
1224                         changer->cur_device->pinfo.generation =
1225                                 ++changer->devq.generation;
1226                         camq_insert(&changer->devq,
1227                                 (cam_pinfo *)changer->cur_device);
1228                 }
1229         }
1230
1231         softc = (struct cd_softc *)camq_remove(&changer->devq, CAMQ_HEAD);
1232
1233         changer->cur_device = softc;
1234
1235         changer->devq.qfrozen_cnt++;
1236         softc->flags |= CD_FLAG_ACTIVE;
1237
1238         /* Just in case this device is waiting */
1239         wakeup(&softc->changer);
1240         xpt_schedule(softc->periph, /*priority*/ 1);
1241
1242         /*
1243          * Get rid of any pending timeouts, and set a flag to schedule new
1244          * ones so this device gets its full time quantum.
1245          */
1246         if (changer->flags & CHANGER_TIMEOUT_SCHED) {
1247                 untimeout(cdrunchangerqueue, changer, changer->long_handle);
1248                 changer->flags &= ~CHANGER_TIMEOUT_SCHED;
1249         }
1250
1251         if (changer->flags & CHANGER_SHORT_TMOUT_SCHED) {
1252                 untimeout(cdshorttimeout, changer, changer->short_handle);
1253                 changer->flags &= ~CHANGER_SHORT_TMOUT_SCHED;
1254         }
1255
1256         /*
1257          * We need to schedule timeouts, but we only do this after the
1258          * first transaction has completed.  This eliminates the changer
1259          * switch time.
1260          */
1261         changer->flags |= CHANGER_NEED_TIMEOUT;
1262
1263         splx(s);
1264 }
1265
1266 static void
1267 cdchangerschedule(struct cd_softc *softc)
1268 {
1269         struct cdchanger *changer;
1270         int s;
1271
1272         s = splsoftcam();
1273
1274         changer = softc->changer;
1275
1276         /*
1277          * If this is a changer, and this is the current device,
1278          * and this device has at least the minimum time quantum to
1279          * run, see if we can switch it out.
1280          */
1281         if ((softc->flags & CD_FLAG_ACTIVE)
1282          && ((changer->flags & CHANGER_SHORT_TMOUT_SCHED) == 0)
1283          && ((changer->flags & CHANGER_NEED_TIMEOUT) == 0)) {
1284                 /*
1285                  * We try three things here.  The first is that we
1286                  * check to see whether the schedule on completion
1287                  * flag is set.  If it is, we decrement the number
1288                  * of buffers left, and if it's zero, we reschedule.
1289                  * Next, we check to see whether the pending buffer
1290                  * queue is empty and whether there are no
1291                  * outstanding transactions.  If so, we reschedule.
1292                  * Next, we see if the pending buffer queue is empty.
1293                  * If it is, we set the number of buffers left to
1294                  * the current active buffer count and set the
1295                  * schedule on complete flag.
1296                  */
1297                 if (softc->flags & CD_FLAG_SCHED_ON_COMP) {
1298                         if (--softc->bufs_left == 0) {
1299                                 softc->changer->flags |=
1300                                         CHANGER_MANUAL_CALL;
1301                                 softc->flags &= ~CD_FLAG_SCHED_ON_COMP;
1302                                 cdrunchangerqueue(softc->changer);
1303                         }
1304                 } else if ((bioq_first(&softc->bio_queue) == NULL)
1305                         && (softc->outstanding_cmds == 0)) {
1306                         softc->changer->flags |= CHANGER_MANUAL_CALL;
1307                         cdrunchangerqueue(softc->changer);
1308                 }
1309         } else if ((softc->changer->flags & CHANGER_NEED_TIMEOUT)
1310                 && (softc->flags & CD_FLAG_ACTIVE)) {
1311
1312                 /*
1313                  * Now that the first transaction to this
1314                  * particular device has completed, we can go ahead
1315                  * and schedule our timeouts.
1316                  */
1317                 if ((changer->flags & CHANGER_TIMEOUT_SCHED) == 0) {
1318                         changer->long_handle =
1319                             timeout(cdrunchangerqueue, changer,
1320                                     changer_max_busy_seconds * hz);
1321                         changer->flags |= CHANGER_TIMEOUT_SCHED;
1322                 } else
1323                         printf("cdchangerschedule: already have a long"
1324                                " timeout!\n");
1325
1326                 if ((changer->flags & CHANGER_SHORT_TMOUT_SCHED) == 0) {
1327                         changer->short_handle =
1328                             timeout(cdshorttimeout, changer,
1329                                     changer_min_busy_seconds * hz);
1330                         changer->flags |= CHANGER_SHORT_TMOUT_SCHED;
1331                 } else
1332                         printf("cdchangerschedule: already have a short "
1333                                "timeout!\n");
1334
1335                 /*
1336                  * We just scheduled timeouts, no need to schedule
1337                  * more.
1338                  */
1339                 changer->flags &= ~CHANGER_NEED_TIMEOUT;
1340
1341         }
1342         splx(s);
1343 }
1344
1345 static int
1346 cdrunccb(union ccb *ccb, int (*error_routine)(union ccb *ccb,
1347                                               u_int32_t cam_flags,
1348                                               u_int32_t sense_flags),
1349          u_int32_t cam_flags, u_int32_t sense_flags)
1350 {
1351         struct cd_softc *softc;
1352         struct cam_periph *periph;
1353         int error;
1354
1355         periph = xpt_path_periph(ccb->ccb_h.path);
1356         softc = (struct cd_softc *)periph->softc;
1357
1358         error = cam_periph_runccb(ccb, error_routine, cam_flags, sense_flags,
1359                                   softc->disk->d_devstat);
1360
1361         if (softc->flags & CD_FLAG_CHANGER)
1362                 cdchangerschedule(softc);
1363
1364         return(error);
1365 }
1366
1367 static union ccb *
1368 cdgetccb(struct cam_periph *periph, u_int32_t priority)
1369 {
1370         struct cd_softc *softc;
1371         int s;
1372
1373         softc = (struct cd_softc *)periph->softc;
1374
1375         if (softc->flags & CD_FLAG_CHANGER) {
1376
1377                 s = splsoftcam();
1378
1379                 /*
1380                  * This should work the first time this device is woken up,
1381                  * but just in case it doesn't, we use a while loop.
1382                  */
1383                 while ((softc->flags & CD_FLAG_ACTIVE) == 0) {
1384                         /*
1385                          * If this changer isn't already queued, queue it up.
1386                          */
1387                         if (softc->pinfo.index == CAM_UNQUEUED_INDEX) {
1388                                 softc->pinfo.priority = 1;
1389                                 softc->pinfo.generation =
1390                                         ++softc->changer->devq.generation;
1391                                 camq_insert(&softc->changer->devq,
1392                                             (cam_pinfo *)softc);
1393                         }
1394                         if (((softc->changer->flags & CHANGER_TIMEOUT_SCHED)==0)
1395                          && ((softc->changer->flags & CHANGER_NEED_TIMEOUT)==0)
1396                          && ((softc->changer->flags
1397                               & CHANGER_SHORT_TMOUT_SCHED)==0)) {
1398                                 softc->changer->flags |= CHANGER_MANUAL_CALL;
1399                                 cdrunchangerqueue(softc->changer);
1400                         } else
1401                                 tsleep(&softc->changer, PRIBIO, "cgticb", 0);
1402                 }
1403                 splx(s);
1404         }
1405         return(cam_periph_getccb(periph, priority));
1406 }
1407
1408
1409 /*
1410  * Actually translate the requested transfer into one the physical driver
1411  * can understand.  The transfer is described by a buf and will include
1412  * only one physical transfer.
1413  */
1414 static void
1415 cdstrategy(struct bio *bp)
1416 {
1417         struct cam_periph *periph;
1418         struct cd_softc *softc;
1419         int    s;
1420
1421         periph = (struct cam_periph *)bp->bio_disk->d_drv1;
1422         if (periph == NULL) {
1423                 biofinish(bp, NULL, ENXIO);
1424                 return;
1425         }
1426
1427         CAM_DEBUG(periph->path, CAM_DEBUG_TRACE, ("entering cdstrategy\n"));
1428
1429         softc = (struct cd_softc *)periph->softc;
1430
1431         /*
1432          * Mask interrupts so that the pack cannot be invalidated until
1433          * after we are in the queue.  Otherwise, we might not properly
1434          * clean up one of the buffers.
1435          */
1436         s = splbio();
1437
1438         /*
1439          * If the device has been made invalid, error out
1440          */
1441         if ((softc->flags & CD_FLAG_INVALID)) {
1442                 splx(s);
1443                 biofinish(bp, NULL, ENXIO);
1444                 return;
1445         }
1446
1447         /*
1448          * If we don't have valid media, look for it before trying to
1449          * schedule the I/O.
1450          */
1451         if ((softc->flags & CD_FLAG_VALID_MEDIA) == 0) {
1452                 int error;
1453
1454                 error = cdcheckmedia(periph);
1455                 if (error != 0) {
1456                         splx(s);
1457                         biofinish(bp, NULL, error);
1458                         return;
1459                 }
1460         }
1461
1462         /*
1463          * Place it in the queue of disk activities for this disk
1464          */
1465         bioq_disksort(&softc->bio_queue, bp);
1466
1467         splx(s);
1468
1469         /*
1470          * Schedule ourselves for performing the work.  We do things
1471          * differently for changers.
1472          */
1473         if ((softc->flags & CD_FLAG_CHANGER) == 0)
1474                 xpt_schedule(periph, /* XXX priority */1);
1475         else
1476                 cdschedule(periph, /* priority */ 1);
1477
1478         return;
1479 }
1480
1481 static void
1482 cdstart(struct cam_periph *periph, union ccb *start_ccb)
1483 {
1484         struct cd_softc *softc;
1485         struct bio *bp;
1486         struct ccb_scsiio *csio;
1487         struct scsi_read_capacity_data *rcap;
1488         int s;
1489
1490         softc = (struct cd_softc *)periph->softc;
1491
1492         CAM_DEBUG(periph->path, CAM_DEBUG_TRACE, ("entering cdstart\n"));
1493
1494         switch (softc->state) {
1495         case CD_STATE_NORMAL:
1496         {
1497                 int oldspl;
1498
1499                 s = splbio();
1500                 bp = bioq_first(&softc->bio_queue);
1501                 if (periph->immediate_priority <= periph->pinfo.priority) {
1502                         start_ccb->ccb_h.ccb_state = CD_CCB_WAITING;
1503
1504                         SLIST_INSERT_HEAD(&periph->ccb_list, &start_ccb->ccb_h,
1505                                           periph_links.sle);
1506                         periph->immediate_priority = CAM_PRIORITY_NONE;
1507                         splx(s);
1508                         wakeup(&periph->ccb_list);
1509                 } else if (bp == NULL) {
1510                         splx(s);
1511                         xpt_release_ccb(start_ccb);
1512                 } else {
1513                         bioq_remove(&softc->bio_queue, bp);
1514
1515                         devstat_start_transaction_bio(softc->disk->d_devstat, bp);
1516
1517                         scsi_read_write(&start_ccb->csio,
1518                                         /*retries*/4,
1519                                         /* cbfcnp */ cddone,
1520                                         MSG_SIMPLE_Q_TAG,
1521                                         /* read */bp->bio_cmd == BIO_READ,
1522                                         /* byte2 */ 0,
1523                                         /* minimum_cmd_size */ 10,
1524                                         /* lba */ bp->bio_offset /
1525                                           softc->params.blksize,
1526                                         bp->bio_bcount / softc->params.blksize,
1527                                         /* data_ptr */ bp->bio_data,
1528                                         /* dxfer_len */ bp->bio_bcount,
1529                                         /* sense_len */ SSD_FULL_SIZE,
1530                                         /* timeout */ 30000);
1531                         start_ccb->ccb_h.ccb_state = CD_CCB_BUFFER_IO;
1532
1533
1534                         /*
1535                          * Block out any asyncronous callbacks
1536                          * while we touch the pending ccb list.
1537                          */
1538                         oldspl = splcam();
1539                         LIST_INSERT_HEAD(&softc->pending_ccbs,
1540                                          &start_ccb->ccb_h, periph_links.le);
1541                         softc->outstanding_cmds++;
1542                         splx(oldspl);
1543
1544                         /* We expect a unit attention from this device */
1545                         if ((softc->flags & CD_FLAG_RETRY_UA) != 0) {
1546                                 start_ccb->ccb_h.ccb_state |= CD_CCB_RETRY_UA;
1547                                 softc->flags &= ~CD_FLAG_RETRY_UA;
1548                         }
1549
1550                         start_ccb->ccb_h.ccb_bp = bp;
1551                         bp = bioq_first(&softc->bio_queue);
1552                         splx(s);
1553
1554                         xpt_action(start_ccb);
1555                 }
1556                 if (bp != NULL) {
1557                         /* Have more work to do, so ensure we stay scheduled */
1558                         xpt_schedule(periph, /* XXX priority */1);
1559                 }
1560                 break;
1561         }
1562         case CD_STATE_PROBE:
1563         {
1564
1565                 rcap = (struct scsi_read_capacity_data *)malloc(sizeof(*rcap),
1566                                                                 M_TEMP,
1567                                                                 M_NOWAIT);
1568                 if (rcap == NULL) {
1569                         xpt_print_path(periph->path);
1570                         printf("cdstart: Couldn't malloc read_capacity data\n");
1571                         /* cd_free_periph??? */
1572                         break;
1573                 }
1574                 csio = &start_ccb->csio;
1575                 scsi_read_capacity(csio,
1576                                    /*retries*/1,
1577                                    cddone,
1578                                    MSG_SIMPLE_Q_TAG,
1579                                    rcap,
1580                                    SSD_FULL_SIZE,
1581                                    /*timeout*/20000);
1582                 start_ccb->ccb_h.ccb_bp = NULL;
1583                 start_ccb->ccb_h.ccb_state = CD_CCB_PROBE;
1584                 xpt_action(start_ccb);
1585                 break;
1586         }
1587         }
1588 }
1589
1590 static void
1591 cddone(struct cam_periph *periph, union ccb *done_ccb)
1592 {
1593         struct cd_softc *softc;
1594         struct ccb_scsiio *csio;
1595
1596         CAM_DEBUG(periph->path, CAM_DEBUG_TRACE, ("entering cddone\n"));
1597
1598         softc = (struct cd_softc *)periph->softc;
1599         csio = &done_ccb->csio;
1600
1601         switch (csio->ccb_h.ccb_state & CD_CCB_TYPE_MASK) {
1602         case CD_CCB_BUFFER_IO:
1603         {
1604                 struct bio      *bp;
1605                 int             error;
1606                 int             oldspl;
1607
1608                 bp = (struct bio *)done_ccb->ccb_h.ccb_bp;
1609                 error = 0;
1610
1611                 if ((done_ccb->ccb_h.status & CAM_STATUS_MASK) != CAM_REQ_CMP) {
1612                         int sf;
1613
1614                         if ((done_ccb->ccb_h.ccb_state & CD_CCB_RETRY_UA) != 0)
1615                                 sf = SF_RETRY_UA;
1616                         else
1617                                 sf = 0;
1618
1619                         error = cderror(done_ccb, CAM_RETRY_SELTO, sf);
1620                         if (error == ERESTART) {
1621                                 /*
1622                                  * A retry was scheuled, so
1623                                  * just return.
1624                                  */
1625                                 return;
1626                         }
1627                 }
1628
1629                 if (error != 0) {
1630                         int s;
1631
1632                         xpt_print_path(periph->path);
1633                         printf("cddone: got error %#x back\n", error);
1634                         s = splbio();
1635                         bioq_flush(&softc->bio_queue, NULL, EIO);
1636                         splx(s);
1637                         bp->bio_resid = bp->bio_bcount;
1638                         bp->bio_error = error;
1639                         bp->bio_flags |= BIO_ERROR;
1640                         cam_release_devq(done_ccb->ccb_h.path,
1641                                          /*relsim_flags*/0,
1642                                          /*reduction*/0,
1643                                          /*timeout*/0,
1644                                          /*getcount_only*/0);
1645
1646                 } else {
1647                         bp->bio_resid = csio->resid;
1648                         bp->bio_error = 0;
1649                         if (bp->bio_resid != 0) {
1650                                 /*
1651                                  * Short transfer ???
1652                                  * XXX: not sure this is correct for partial
1653                                  * transfers at EOM
1654                                  */
1655                                 bp->bio_flags |= BIO_ERROR;
1656                         }
1657                 }
1658
1659                 /*
1660                  * Block out any asyncronous callbacks
1661                  * while we touch the pending ccb list.
1662                  */
1663                 oldspl = splcam();
1664                 LIST_REMOVE(&done_ccb->ccb_h, periph_links.le);
1665                 softc->outstanding_cmds--;
1666                 splx(oldspl);
1667
1668                 if (softc->flags & CD_FLAG_CHANGER)
1669                         cdchangerschedule(softc);
1670
1671                 biofinish(bp, softc->disk->d_devstat, 0);
1672                 break;
1673         }
1674         case CD_CCB_PROBE:
1675         {
1676                 struct     scsi_read_capacity_data *rdcap;
1677                 char       announce_buf[120]; /*
1678                                                * Currently (9/30/97) the
1679                                                * longest possible announce
1680                                                * buffer is 108 bytes, for the
1681                                                * first error case below.
1682                                                * That is 39 bytes for the
1683                                                * basic string, 16 bytes for the
1684                                                * biggest sense key (hardware
1685                                                * error), 52 bytes for the
1686                                                * text of the largest sense
1687                                                * qualifier valid for a CDROM,
1688                                                * (0x72, 0x03 or 0x04,
1689                                                * 0x03), and one byte for the
1690                                                * null terminating character.
1691                                                * To allow for longer strings,
1692                                                * the announce buffer is 120
1693                                                * bytes.
1694                                                */
1695                 struct     cd_params *cdp;
1696
1697                 cdp = &softc->params;
1698
1699                 rdcap = (struct scsi_read_capacity_data *)csio->data_ptr;
1700
1701                 cdp->disksize = scsi_4btoul (rdcap->addr) + 1;
1702                 cdp->blksize = scsi_4btoul (rdcap->length);
1703
1704                 if ((csio->ccb_h.status & CAM_STATUS_MASK) == CAM_REQ_CMP) {
1705
1706                         snprintf(announce_buf, sizeof(announce_buf),
1707                                 "cd present [%lu x %lu byte records]",
1708                                 cdp->disksize, (u_long)cdp->blksize);
1709
1710                 } else {
1711                         int     error;
1712                         /*
1713                          * Retry any UNIT ATTENTION type errors.  They
1714                          * are expected at boot.
1715                          */
1716                         error = cderror(done_ccb, CAM_RETRY_SELTO,
1717                                         SF_RETRY_UA | SF_NO_PRINT);
1718                         if (error == ERESTART) {
1719                                 /*
1720                                  * A retry was scheuled, so
1721                                  * just return.
1722                                  */
1723                                 return;
1724                         } else if (error != 0) {
1725
1726                                 struct scsi_sense_data *sense;
1727                                 int asc, ascq;
1728                                 int sense_key, error_code;
1729                                 int have_sense;
1730                                 cam_status status;
1731                                 struct ccb_getdev cgd;
1732
1733                                 /* Don't wedge this device's queue */
1734                                 cam_release_devq(done_ccb->ccb_h.path,
1735                                                  /*relsim_flags*/0,
1736                                                  /*reduction*/0,
1737                                                  /*timeout*/0,
1738                                                  /*getcount_only*/0);
1739
1740                                 status = done_ccb->ccb_h.status;
1741
1742                                 xpt_setup_ccb(&cgd.ccb_h,
1743                                               done_ccb->ccb_h.path,
1744                                               /* priority */ 1);
1745                                 cgd.ccb_h.func_code = XPT_GDEV_TYPE;
1746                                 xpt_action((union ccb *)&cgd);
1747
1748                                 if (((csio->ccb_h.flags & CAM_SENSE_PHYS) != 0)
1749                                  || ((csio->ccb_h.flags & CAM_SENSE_PTR) != 0)
1750                                  || ((status & CAM_AUTOSNS_VALID) == 0))
1751                                         have_sense = FALSE;
1752                                 else
1753                                         have_sense = TRUE;
1754
1755                                 if (have_sense) {
1756                                         sense = &csio->sense_data;
1757                                         scsi_extract_sense(sense, &error_code,
1758                                                            &sense_key,
1759                                                            &asc, &ascq);
1760                                 }
1761                                 /*
1762                                  * Attach to anything that claims to be a
1763                                  * CDROM or WORM device, as long as it
1764                                  * doesn't return a "Logical unit not
1765                                  * supported" (0x25) error.
1766                                  */
1767                                 if ((have_sense) && (asc != 0x25)
1768                                  && (error_code == SSD_CURRENT_ERROR)) {
1769                                         const char *sense_key_desc;
1770                                         const char *asc_desc;
1771
1772                                         scsi_sense_desc(sense_key, asc, ascq,
1773                                                         &cgd.inq_data,
1774                                                         &sense_key_desc,
1775                                                         &asc_desc);
1776                                         snprintf(announce_buf,
1777                                             sizeof(announce_buf),
1778                                                 "Attempt to query device "
1779                                                 "size failed: %s, %s",
1780                                                 sense_key_desc,
1781                                                 asc_desc);
1782                                 } else if ((have_sense == 0)
1783                                       && ((status & CAM_STATUS_MASK) ==
1784                                            CAM_SCSI_STATUS_ERROR)
1785                                       && (csio->scsi_status ==
1786                                           SCSI_STATUS_BUSY)) {
1787                                         snprintf(announce_buf,
1788                                             sizeof(announce_buf),
1789                                             "Attempt to query device "
1790                                             "size failed: SCSI Status: %s",
1791                                             scsi_status_string(csio));
1792                                 } else if (SID_TYPE(&cgd.inq_data) == T_CDROM) {
1793                                         /*
1794                                          * We only print out an error for
1795                                          * CDROM type devices.  For WORM
1796                                          * devices, we don't print out an
1797                                          * error since a few WORM devices
1798                                          * don't support CDROM commands.
1799                                          * If we have sense information, go
1800                                          * ahead and print it out.
1801                                          * Otherwise, just say that we
1802                                          * couldn't attach.
1803                                          */
1804
1805                                         /*
1806                                          * Just print out the error, not
1807                                          * the full probe message, when we
1808                                          * don't attach.
1809                                          */
1810                                         if (have_sense)
1811                                                 scsi_sense_print(
1812                                                         &done_ccb->csio);
1813                                         else {
1814                                                 xpt_print_path(periph->path);
1815                                                 printf("got CAM status %#x\n",
1816                                                        done_ccb->ccb_h.status);
1817                                         }
1818                                         xpt_print_path(periph->path);
1819                                         printf("fatal error, failed"
1820                                                " to attach to device\n");
1821
1822                                         /*
1823                                          * Invalidate this peripheral.
1824                                          */
1825                                         cam_periph_invalidate(periph);
1826
1827                                         announce_buf[0] = '\0';
1828                                 } else {
1829
1830                                         /*
1831                                          * Invalidate this peripheral.
1832                                          */
1833                                         cam_periph_invalidate(periph);
1834                                         announce_buf[0] = '\0';
1835                                 }
1836                         }
1837                 }
1838                 free(rdcap, M_TEMP);
1839                 if (announce_buf[0] != '\0') {
1840                         xpt_announce_periph(periph, announce_buf);
1841                         if (softc->flags & CD_FLAG_CHANGER)
1842                                 cdchangerschedule(softc);
1843                         /*
1844                          * Create our sysctl variables, now that we know
1845                          * we have successfully attached.
1846                          */
1847                         taskqueue_enqueue(taskqueue_thread,&softc->sysctl_task);
1848                 }
1849                 softc->state = CD_STATE_NORMAL;
1850                 /*
1851                  * Since our peripheral may be invalidated by an error
1852                  * above or an external event, we must release our CCB
1853                  * before releasing the probe lock on the peripheral.
1854                  * The peripheral will only go away once the last lock
1855                  * is removed, and we need it around for the CCB release
1856                  * operation.
1857                  */
1858                 xpt_release_ccb(done_ccb);
1859                 cam_periph_unlock(periph);
1860                 return;
1861         }
1862         case CD_CCB_WAITING:
1863         {
1864                 /* Caller will release the CCB */
1865                 CAM_DEBUG(periph->path, CAM_DEBUG_TRACE,
1866                           ("trying to wakeup ccbwait\n"));
1867
1868                 wakeup(&done_ccb->ccb_h.cbfcnp);
1869                 return;
1870         }
1871         default:
1872                 break;
1873         }
1874         xpt_release_ccb(done_ccb);
1875 }
1876
1877 static union cd_pages *
1878 cdgetpage(struct cd_mode_params *mode_params)
1879 {
1880         union cd_pages *page;
1881
1882         if (mode_params->cdb_size == 10)
1883                 page = (union cd_pages *)find_mode_page_10(
1884                         (struct scsi_mode_header_10 *)mode_params->mode_buf);
1885         else
1886                 page = (union cd_pages *)find_mode_page_6(
1887                         (struct scsi_mode_header_6 *)mode_params->mode_buf);
1888
1889         return (page);
1890 }
1891
1892 static int
1893 cdgetpagesize(int page_num)
1894 {
1895         int i;
1896
1897         for (i = 0; i < (sizeof(cd_page_size_table)/
1898              sizeof(cd_page_size_table[0])); i++) {
1899                 if (cd_page_size_table[i].page == page_num)
1900                         return (cd_page_size_table[i].page_size);
1901         }
1902
1903         return (-1);
1904 }
1905
1906 static int
1907 cdioctl(struct disk *dp, u_long cmd, void *addr, int flag, struct thread *td)
1908 {
1909
1910         struct  cam_periph *periph;
1911         struct  cd_softc *softc;
1912         int     error, nocopyout;
1913
1914         periph = (struct cam_periph *)dp->d_drv1;
1915         if (periph == NULL)
1916                 return(ENXIO);
1917
1918         CAM_DEBUG(periph->path, CAM_DEBUG_TRACE, ("entering cdioctl\n"));
1919
1920         softc = (struct cd_softc *)periph->softc;
1921
1922         CAM_DEBUG(periph->path, CAM_DEBUG_TRACE,
1923                   ("trying to do ioctl %#lx\n", cmd));
1924
1925         error = cam_periph_lock(periph, PRIBIO | PCATCH);
1926
1927         if (error != 0)
1928                 return(error);
1929         /*
1930          * If we don't have media loaded, check for it.  If still don't
1931          * have media loaded, we can only do a load or eject.
1932          */
1933         if (((softc->flags & CD_FLAG_VALID_MEDIA) == 0)
1934          && ((cmd != CDIOCCLOSE)
1935           && (cmd != CDIOCEJECT))) {
1936                 error = cdcheckmedia(periph);
1937                 if (error != 0) {
1938                         cam_periph_unlock(periph);
1939                         return (error);
1940                 }
1941         }
1942
1943         nocopyout = 0;
1944         switch (cmd) {
1945
1946         case CDIOCPLAYTRACKS:
1947                 {
1948                         struct ioc_play_track *args
1949                             = (struct ioc_play_track *) addr;
1950                         struct cd_mode_params params;
1951                         union cd_pages *page;
1952
1953                         params.alloc_len = sizeof(union cd_mode_data_6_10);
1954                         params.mode_buf = malloc(params.alloc_len, M_TEMP,
1955                                                  M_WAITOK | M_ZERO);
1956
1957                         CAM_DEBUG(periph->path, CAM_DEBUG_SUBTRACE,
1958                                   ("trying to do CDIOCPLAYTRACKS\n"));
1959
1960                         error = cdgetmode(periph, &params, AUDIO_PAGE);
1961                         if (error) {
1962                                 free(params.mode_buf, M_TEMP);
1963                                 break;
1964                         }
1965                         page = cdgetpage(&params);
1966
1967                         page->audio.flags &= ~CD_PA_SOTC;
1968                         page->audio.flags |= CD_PA_IMMED;
1969                         error = cdsetmode(periph, &params);
1970                         free(params.mode_buf, M_TEMP);
1971                         if (error)
1972                                 break;
1973
1974                         /*
1975                          * This was originally implemented with the PLAY
1976                          * AUDIO TRACK INDEX command, but that command was
1977                          * deprecated after SCSI-2.  Most (all?) SCSI CDROM
1978                          * drives support it but ATAPI and ATAPI-derivative
1979                          * drives don't seem to support it.  So we keep a
1980                          * cache of the table of contents and translate
1981                          * track numbers to MSF format.
1982                          */
1983                         if (softc->flags & CD_FLAG_VALID_TOC) {
1984                                 union msf_lba *sentry, *eentry;
1985                                 int st, et;
1986
1987                                 if (args->end_track <
1988                                     softc->toc.header.ending_track + 1)
1989                                         args->end_track++;
1990                                 if (args->end_track >
1991                                     softc->toc.header.ending_track + 1)
1992                                         args->end_track =
1993                                             softc->toc.header.ending_track + 1;
1994                                 st = args->start_track -
1995                                         softc->toc.header.starting_track;
1996                                 et = args->end_track -
1997                                         softc->toc.header.starting_track;
1998                                 if ((st < 0)
1999                                  || (et < 0)
2000                                  || (st > (softc->toc.header.ending_track -
2001                                      softc->toc.header.starting_track))) {
2002                                         error = EINVAL;
2003                                         break;
2004                                 }
2005                                 sentry = &softc->toc.entries[st].addr;
2006                                 eentry = &softc->toc.entries[et].addr;
2007                                 error = cdplaymsf(periph,
2008                                                   sentry->msf.minute,
2009                                                   sentry->msf.second,
2010                                                   sentry->msf.frame,
2011                                                   eentry->msf.minute,
2012                                                   eentry->msf.second,
2013                                                   eentry->msf.frame);
2014                         } else {
2015                                 /*
2016                                  * If we don't have a valid TOC, try the
2017                                  * play track index command.  It is part of
2018                                  * the SCSI-2 spec, but was removed in the
2019                                  * MMC specs.  ATAPI and ATAPI-derived
2020                                  * drives don't support it.
2021                                  */
2022                                 if (softc->quirks & CD_Q_BCD_TRACKS) {
2023                                         args->start_track =
2024                                                 bin2bcd(args->start_track);
2025                                         args->end_track =
2026                                                 bin2bcd(args->end_track);
2027                                 }
2028                                 error = cdplaytracks(periph,
2029                                                      args->start_track,
2030                                                      args->start_index,
2031                                                      args->end_track,
2032                                                      args->end_index);
2033                         }
2034                 }
2035                 break;
2036         case CDIOCPLAYMSF:
2037                 {
2038                         struct ioc_play_msf *args
2039                                 = (struct ioc_play_msf *) addr;
2040                         struct cd_mode_params params;
2041                         union cd_pages *page;
2042
2043                         params.alloc_len = sizeof(union cd_mode_data_6_10);
2044                         params.mode_buf = malloc(params.alloc_len, M_TEMP,
2045                                                  M_WAITOK | M_ZERO);
2046
2047                         CAM_DEBUG(periph->path, CAM_DEBUG_SUBTRACE,
2048                                   ("trying to do CDIOCPLAYMSF\n"));
2049
2050                         error = cdgetmode(periph, &params, AUDIO_PAGE);
2051                         if (error) {
2052                                 free(params.mode_buf, M_TEMP);
2053                                 break;
2054                         }
2055                         page = cdgetpage(&params);
2056
2057                         page->audio.flags &= ~CD_PA_SOTC;
2058                         page->audio.flags |= CD_PA_IMMED;
2059                         error = cdsetmode(periph, &params);
2060                         free(params.mode_buf, M_TEMP);
2061                         if (error)
2062                                 break;
2063                         error = cdplaymsf(periph,
2064                                           args->start_m,
2065                                           args->start_s,
2066                                           args->start_f,
2067                                           args->end_m,
2068                                           args->end_s,
2069                                           args->end_f);
2070                 }
2071                 break;
2072         case CDIOCPLAYBLOCKS:
2073                 {
2074                         struct ioc_play_blocks *args
2075                                 = (struct ioc_play_blocks *) addr;
2076                         struct cd_mode_params params;
2077                         union cd_pages *page;
2078
2079                         CAM_DEBUG(periph->path, CAM_DEBUG_SUBTRACE,
2080                                   ("trying to do CDIOCPLAYBLOCKS\n"));
2081
2082                         params.alloc_len = sizeof(union cd_mode_data_6_10);
2083                         params.mode_buf = malloc(params.alloc_len, M_TEMP,
2084                                                  M_WAITOK | M_ZERO);
2085
2086                         error = cdgetmode(periph, &params, AUDIO_PAGE);
2087                         if (error) {
2088                                 free(params.mode_buf, M_TEMP);
2089                                 break;
2090                         }
2091                         page = cdgetpage(&params);
2092
2093                         page->audio.flags &= ~CD_PA_SOTC;
2094                         page->audio.flags |= CD_PA_IMMED;
2095                         error = cdsetmode(periph, &params);
2096                         free(params.mode_buf, M_TEMP);
2097                         if (error)
2098                                 break;
2099                         error = cdplay(periph, args->blk, args->len);
2100                 }
2101                 break;
2102         case CDIOCREADSUBCHANNEL_SYSSPACE:
2103                 nocopyout = 1;
2104                 /* Fallthrough */
2105         case CDIOCREADSUBCHANNEL:
2106                 {
2107                         struct ioc_read_subchannel *args
2108                                 = (struct ioc_read_subchannel *) addr;
2109                         struct cd_sub_channel_info *data;
2110                         u_int32_t len = args->data_len;
2111
2112                         CAM_DEBUG(periph->path, CAM_DEBUG_SUBTRACE,
2113                                   ("trying to do CDIOCREADSUBCHANNEL\n"));
2114
2115                         data = malloc(sizeof(struct cd_sub_channel_info),
2116                                       M_TEMP, M_WAITOK);
2117
2118                         if ((len > sizeof(struct cd_sub_channel_info)) ||
2119                             (len < sizeof(struct cd_sub_channel_header))) {
2120                                 printf(
2121                                         "scsi_cd: cdioctl: "
2122                                         "cdioreadsubchannel: error, len=%d\n",
2123                                         len);
2124                                 error = EINVAL;
2125                                 free(data, M_TEMP);
2126                                 break;
2127                         }
2128
2129                         if (softc->quirks & CD_Q_BCD_TRACKS)
2130                                 args->track = bin2bcd(args->track);
2131
2132                         error = cdreadsubchannel(periph, args->address_format,
2133                                 args->data_format, args->track, data, len);
2134
2135                         if (error) {
2136                                 free(data, M_TEMP);
2137                                 break;
2138                         }
2139                         if (softc->quirks & CD_Q_BCD_TRACKS)
2140                                 data->what.track_info.track_number =
2141                                     bcd2bin(data->what.track_info.track_number);
2142                         len = min(len, ((data->header.data_len[0] << 8) +
2143                                 data->header.data_len[1] +
2144                                 sizeof(struct cd_sub_channel_header)));
2145                         if (nocopyout == 0) {
2146                                 if (copyout(data, args->data, len) != 0) {
2147                                         error = EFAULT;
2148                                 }
2149                         } else {
2150                                 bcopy(data, args->data, len);
2151                         }
2152                         free(data, M_TEMP);
2153                 }
2154                 break;
2155
2156         case CDIOREADTOCHEADER:
2157                 {
2158                         struct ioc_toc_header *th;
2159
2160                         CAM_DEBUG(periph->path, CAM_DEBUG_SUBTRACE,
2161                                   ("trying to do CDIOREADTOCHEADER\n"));
2162
2163                         th = malloc(sizeof(struct ioc_toc_header), M_TEMP,
2164                                     M_WAITOK);
2165                         error = cdreadtoc(periph, 0, 0, (u_int8_t *)th,
2166                                           sizeof (*th), /*sense_flags*/0);
2167                         if (error) {
2168                                 free(th, M_TEMP);
2169                                 break;
2170                         }
2171                         if (softc->quirks & CD_Q_BCD_TRACKS) {
2172                                 /* we are going to have to convert the BCD
2173                                  * encoding on the cd to what is expected
2174                                  */
2175                                 th->starting_track =
2176                                         bcd2bin(th->starting_track);
2177                                 th->ending_track = bcd2bin(th->ending_track);
2178                         }
2179                         th->len = ntohs(th->len);
2180                         bcopy(th, addr, sizeof(*th));
2181                         free(th, M_TEMP);
2182                 }
2183                 break;
2184         case CDIOREADTOCENTRYS:
2185                 {
2186                         struct cd_tocdata *data;
2187                         struct cd_toc_single *lead;
2188                         struct ioc_read_toc_entry *te =
2189                                 (struct ioc_read_toc_entry *) addr;
2190                         struct ioc_toc_header *th;
2191                         u_int32_t len, readlen, idx, num;
2192                         u_int32_t starting_track = te->starting_track;
2193
2194                         CAM_DEBUG(periph->path, CAM_DEBUG_SUBTRACE,
2195                                   ("trying to do CDIOREADTOCENTRYS\n"));
2196
2197                         data = malloc(sizeof(*data), M_TEMP, M_WAITOK);
2198                         lead = malloc(sizeof(*lead), M_TEMP, M_WAITOK);
2199
2200                         if (te->data_len < sizeof(struct cd_toc_entry)
2201                          || (te->data_len % sizeof(struct cd_toc_entry)) != 0
2202                          || (te->address_format != CD_MSF_FORMAT
2203                           && te->address_format != CD_LBA_FORMAT)) {
2204                                 error = EINVAL;
2205                                 printf("scsi_cd: error in readtocentries, "
2206                                        "returning EINVAL\n");
2207                                 free(data, M_TEMP);
2208                                 free(lead, M_TEMP);
2209                                 break;
2210                         }
2211
2212                         th = &data->header;
2213                         error = cdreadtoc(periph, 0, 0, (u_int8_t *)th,
2214                                           sizeof (*th), /*sense_flags*/0);
2215                         if (error) {
2216                                 free(data, M_TEMP);
2217                                 free(lead, M_TEMP);
2218                                 break;
2219                         }
2220
2221                         if (softc->quirks & CD_Q_BCD_TRACKS) {
2222                                 /* we are going to have to convert the BCD
2223                                  * encoding on the cd to what is expected
2224                                  */
2225                                 th->starting_track =
2226                                     bcd2bin(th->starting_track);
2227                                 th->ending_track = bcd2bin(th->ending_track);
2228                         }
2229
2230                         if (starting_track == 0)
2231                                 starting_track = th->starting_track;
2232                         else if (starting_track == LEADOUT)
2233                                 starting_track = th->ending_track + 1;
2234                         else if (starting_track < th->starting_track ||
2235                                  starting_track > th->ending_track + 1) {
2236                                 printf("scsi_cd: error in readtocentries, "
2237                                        "returning EINVAL\n");
2238                                 free(data, M_TEMP);
2239                                 free(lead, M_TEMP);
2240                                 error = EINVAL;
2241                                 break;
2242                         }
2243
2244                         /* calculate reading length without leadout entry */
2245                         readlen = (th->ending_track - starting_track + 1) *
2246                                   sizeof(struct cd_toc_entry);
2247
2248                         /* and with leadout entry */
2249                         len = readlen + sizeof(struct cd_toc_entry);
2250                         if (te->data_len < len) {
2251                                 len = te->data_len;
2252                                 if (readlen > len)
2253                                         readlen = len;
2254                         }
2255                         if (len > sizeof(data->entries)) {
2256                                 printf("scsi_cd: error in readtocentries, "
2257                                        "returning EINVAL\n");
2258                                 error = EINVAL;
2259                                 free(data, M_TEMP);
2260                                 free(lead, M_TEMP);
2261                                 break;
2262                         }
2263                         num = len / sizeof(struct cd_toc_entry);
2264
2265                         if (readlen > 0) {
2266                                 error = cdreadtoc(periph, te->address_format,
2267                                                   starting_track,
2268                                                   (u_int8_t *)data,
2269                                                   readlen + sizeof (*th),
2270                                                   /*sense_flags*/0);
2271                                 if (error) {
2272                                         free(data, M_TEMP);
2273                                         free(lead, M_TEMP);
2274                                         break;
2275                                 }
2276                         }
2277
2278                         /* make leadout entry if needed */
2279                         idx = starting_track + num - 1;
2280                         if (softc->quirks & CD_Q_BCD_TRACKS)
2281                                 th->ending_track = bcd2bin(th->ending_track);
2282                         if (idx == th->ending_track + 1) {
2283                                 error = cdreadtoc(periph, te->address_format,
2284                                                   LEADOUT, (u_int8_t *)lead,
2285                                                   sizeof(*lead),
2286                                                   /*sense_flags*/0);
2287                                 if (error) {
2288                                         free(data, M_TEMP);
2289                                         free(lead, M_TEMP);
2290                                         break;
2291                                 }
2292                                 data->entries[idx - starting_track] =
2293                                         lead->entry;
2294                         }
2295                         if (softc->quirks & CD_Q_BCD_TRACKS) {
2296                                 for (idx = 0; idx < num - 1; idx++) {
2297                                         data->entries[idx].track =
2298                                             bcd2bin(data->entries[idx].track);
2299                                 }
2300                         }
2301
2302                         error = copyout(data->entries, te->data, len);
2303                         free(data, M_TEMP);
2304                         free(lead, M_TEMP);
2305                 }
2306                 break;
2307         case CDIOREADTOCENTRY:
2308                 {
2309                         struct cd_toc_single *data;
2310                         struct ioc_read_toc_single_entry *te =
2311                                 (struct ioc_read_toc_single_entry *) addr;
2312                         struct ioc_toc_header *th;
2313                         u_int32_t track;
2314
2315                         CAM_DEBUG(periph->path, CAM_DEBUG_SUBTRACE,
2316                                   ("trying to do CDIOREADTOCENTRY\n"));
2317
2318                         data = malloc(sizeof(*data), M_TEMP, M_WAITOK);
2319
2320                         if (te->address_format != CD_MSF_FORMAT
2321                             && te->address_format != CD_LBA_FORMAT) {
2322                                 printf("error in readtocentry, "
2323                                        " returning EINVAL\n");
2324                                 free(data, M_TEMP);
2325                                 error = EINVAL;
2326                                 break;
2327                         }
2328
2329                         th = &data->header;
2330                         error = cdreadtoc(periph, 0, 0, (u_int8_t *)th,
2331                                           sizeof (*th), /*sense_flags*/0);
2332                         if (error) {
2333                                 free(data, M_TEMP);
2334                                 break;
2335                         }
2336
2337                         if (softc->quirks & CD_Q_BCD_TRACKS) {
2338                                 /* we are going to have to convert the BCD
2339                                  * encoding on the cd to what is expected
2340                                  */
2341                                 th->starting_track =
2342                                     bcd2bin(th->starting_track);
2343                                 th->ending_track = bcd2bin(th->ending_track);
2344                         }
2345                         track = te->track;
2346                         if (track == 0)
2347                                 track = th->starting_track;
2348                         else if (track == LEADOUT)
2349                                 /* OK */;
2350                         else if (track < th->starting_track ||
2351                                  track > th->ending_track + 1) {
2352                                 printf("error in readtocentry, "
2353                                        " returning EINVAL\n");
2354                                 free(data, M_TEMP);
2355                                 error = EINVAL;
2356                                 break;
2357                         }
2358
2359                         error = cdreadtoc(periph, te->address_format, track,
2360                                           (u_int8_t *)data, sizeof(*data),
2361                                           /*sense_flags*/0);
2362                         if (error) {
2363                                 free(data, M_TEMP);
2364                                 break;
2365                         }
2366
2367                         if (softc->quirks & CD_Q_BCD_TRACKS)
2368                                 data->entry.track = bcd2bin(data->entry.track);
2369                         bcopy(&data->entry, &te->entry,
2370                               sizeof(struct cd_toc_entry));
2371                         free(data, M_TEMP);
2372                 }
2373                 break;
2374         case CDIOCSETPATCH:
2375                 {
2376                         struct ioc_patch *arg = (struct ioc_patch *)addr;
2377                         struct cd_mode_params params;
2378                         union cd_pages *page;
2379
2380                         CAM_DEBUG(periph->path, CAM_DEBUG_SUBTRACE,
2381                                   ("trying to do CDIOCSETPATCH\n"));
2382
2383                         params.alloc_len = sizeof(union cd_mode_data_6_10);
2384                         params.mode_buf = malloc(params.alloc_len, M_TEMP,
2385                                                  M_WAITOK | M_ZERO);
2386                         error = cdgetmode(periph, &params, AUDIO_PAGE);
2387                         if (error) {
2388                                 free(params.mode_buf, M_TEMP);
2389                                 break;
2390                         }
2391                         page = cdgetpage(&params);
2392
2393                         page->audio.port[LEFT_PORT].channels =
2394                                 arg->patch[0];
2395                         page->audio.port[RIGHT_PORT].channels =
2396                                 arg->patch[1];
2397                         page->audio.port[2].channels = arg->patch[2];
2398                         page->audio.port[3].channels = arg->patch[3];
2399                         error = cdsetmode(periph, &params);
2400                         free(params.mode_buf, M_TEMP);
2401                 }
2402                 break;
2403         case CDIOCGETVOL:
2404                 {
2405                         struct ioc_vol *arg = (struct ioc_vol *) addr;
2406                         struct cd_mode_params params;
2407                         union cd_pages *page;
2408
2409                         CAM_DEBUG(periph->path, CAM_DEBUG_SUBTRACE,
2410                                   ("trying to do CDIOCGETVOL\n"));
2411
2412                         params.alloc_len = sizeof(union cd_mode_data_6_10);
2413                         params.mode_buf = malloc(params.alloc_len, M_TEMP,
2414                                                  M_WAITOK | M_ZERO);
2415                         error = cdgetmode(periph, &params, AUDIO_PAGE);
2416                         if (error) {
2417                                 free(params.mode_buf, M_TEMP);
2418                                 break;
2419                         }
2420                         page = cdgetpage(&params);
2421
2422                         arg->vol[LEFT_PORT] =
2423                                 page->audio.port[LEFT_PORT].volume;
2424                         arg->vol[RIGHT_PORT] =
2425                                 page->audio.port[RIGHT_PORT].volume;
2426                         arg->vol[2] = page->audio.port[2].volume;
2427                         arg->vol[3] = page->audio.port[3].volume;
2428                         free(params.mode_buf, M_TEMP);
2429                 }
2430                 break;
2431         case CDIOCSETVOL:
2432                 {
2433                         struct ioc_vol *arg = (struct ioc_vol *) addr;
2434                         struct cd_mode_params params;
2435                         union cd_pages *page;
2436
2437                         CAM_DEBUG(periph->path, CAM_DEBUG_SUBTRACE,
2438                                   ("trying to do CDIOCSETVOL\n"));
2439
2440                         params.alloc_len = sizeof(union cd_mode_data_6_10);
2441                         params.mode_buf = malloc(params.alloc_len, M_TEMP,
2442                                                  M_WAITOK | M_ZERO);
2443                         error = cdgetmode(periph, &params, AUDIO_PAGE);
2444                         if (error) {
2445                                 free(params.mode_buf, M_TEMP);
2446                                 break;
2447                         }
2448                         page = cdgetpage(&params);
2449
2450                         page->audio.port[LEFT_PORT].channels = CHANNEL_0;
2451                         page->audio.port[LEFT_PORT].volume =
2452                                 arg->vol[LEFT_PORT];
2453                         page->audio.port[RIGHT_PORT].channels = CHANNEL_1;
2454                         page->audio.port[RIGHT_PORT].volume =
2455                                 arg->vol[RIGHT_PORT];
2456                         page->audio.port[2].volume = arg->vol[2];
2457                         page->audio.port[3].volume = arg->vol[3];
2458                         error = cdsetmode(periph, &params);
2459                         free(params.mode_buf, M_TEMP);
2460                 }
2461                 break;
2462         case CDIOCSETMONO:
2463                 {
2464                         struct cd_mode_params params;
2465                         union cd_pages *page;
2466
2467                         CAM_DEBUG(periph->path, CAM_DEBUG_SUBTRACE,
2468                                   ("trying to do CDIOCSETMONO\n"));
2469
2470                         params.alloc_len = sizeof(union cd_mode_data_6_10);
2471                         params.mode_buf = malloc(params.alloc_len, M_TEMP,
2472                                                  M_WAITOK | M_ZERO);
2473                         error = cdgetmode(periph, &params, AUDIO_PAGE);
2474                         if (error) {
2475                                 free(params.mode_buf, M_TEMP);
2476                                 break;
2477                         }
2478                         page = cdgetpage(&params);
2479
2480                         page->audio.port[LEFT_PORT].channels =
2481                                 LEFT_CHANNEL | RIGHT_CHANNEL;
2482                         page->audio.port[RIGHT_PORT].channels =
2483                                 LEFT_CHANNEL | RIGHT_CHANNEL;
2484                         page->audio.port[2].channels = 0;
2485                         page->audio.port[3].channels = 0;
2486                         error = cdsetmode(periph, &params);
2487                         free(params.mode_buf, M_TEMP);
2488                 }
2489                 break;
2490         case CDIOCSETSTEREO:
2491                 {
2492                         struct cd_mode_params params;
2493                         union cd_pages *page;
2494
2495                         CAM_DEBUG(periph->path, CAM_DEBUG_SUBTRACE,
2496                                   ("trying to do CDIOCSETSTEREO\n"));
2497
2498                         params.alloc_len = sizeof(union cd_mode_data_6_10);
2499                         params.mode_buf = malloc(params.alloc_len, M_TEMP,
2500                                                  M_WAITOK | M_ZERO);
2501                         error = cdgetmode(periph, &params, AUDIO_PAGE);
2502                         if (error) {
2503                                 free(params.mode_buf, M_TEMP);
2504                                 break;
2505                         }
2506                         page = cdgetpage(&params);
2507
2508                         page->audio.port[LEFT_PORT].channels =
2509                                 LEFT_CHANNEL;
2510                         page->audio.port[RIGHT_PORT].channels =
2511                                 RIGHT_CHANNEL;
2512                         page->audio.port[2].channels = 0;
2513                         page->audio.port[3].channels = 0;
2514                         error = cdsetmode(periph, &params);
2515                         free(params.mode_buf, M_TEMP);
2516                 }
2517                 break;
2518         case CDIOCSETMUTE:
2519                 {
2520                         struct cd_mode_params params;
2521                         union cd_pages *page;
2522
2523                         CAM_DEBUG(periph->path, CAM_DEBUG_SUBTRACE,
2524                                   ("trying to do CDIOCSETMUTE\n"));
2525
2526                         params.alloc_len = sizeof(union cd_mode_data_6_10);
2527                         params.mode_buf = malloc(params.alloc_len, M_TEMP,
2528                                                  M_WAITOK | M_ZERO);
2529                         error = cdgetmode(periph, &params, AUDIO_PAGE);
2530                         if (error) {
2531                                 free(&params, M_TEMP);
2532                                 break;
2533                         }
2534                         page = cdgetpage(&params);
2535
2536                         page->audio.port[LEFT_PORT].channels = 0;
2537                         page->audio.port[RIGHT_PORT].channels = 0;
2538                         page->audio.port[2].channels = 0;
2539                         page->audio.port[3].channels = 0;
2540                         error = cdsetmode(periph, &params);
2541                         free(params.mode_buf, M_TEMP);
2542                 }
2543                 break;
2544         case CDIOCSETLEFT:
2545                 {
2546                         struct cd_mode_params params;
2547                         union cd_pages *page;
2548
2549                         CAM_DEBUG(periph->path, CAM_DEBUG_SUBTRACE,
2550                                   ("trying to do CDIOCSETLEFT\n"));
2551
2552                         params.alloc_len = sizeof(union cd_mode_data_6_10);
2553                         params.mode_buf = malloc(params.alloc_len, M_TEMP,
2554                                                  M_WAITOK | M_ZERO);
2555
2556                         error = cdgetmode(periph, &params, AUDIO_PAGE);
2557                         if (error) {
2558                                 free(params.mode_buf, M_TEMP);
2559                                 break;
2560                         }
2561                         page = cdgetpage(&params);
2562
2563                         page->audio.port[LEFT_PORT].channels = LEFT_CHANNEL;
2564                         page->audio.port[RIGHT_PORT].channels = LEFT_CHANNEL;
2565                         page->audio.port[2].channels = 0;
2566                         page->audio.port[3].channels = 0;
2567                         error = cdsetmode(periph, &params);
2568                         free(params.mode_buf, M_TEMP);
2569                 }
2570                 break;
2571         case CDIOCSETRIGHT:
2572                 {
2573                         struct cd_mode_params params;
2574                         union cd_pages *page;
2575
2576                         CAM_DEBUG(periph->path, CAM_DEBUG_SUBTRACE,
2577                                   ("trying to do CDIOCSETRIGHT\n"));
2578
2579                         params.alloc_len = sizeof(union cd_mode_data_6_10);
2580                         params.mode_buf = malloc(params.alloc_len, M_TEMP,
2581                                                  M_WAITOK | M_ZERO);
2582
2583                         error = cdgetmode(periph, &params, AUDIO_PAGE);
2584                         if (error) {
2585                                 free(params.mode_buf, M_TEMP);
2586                                 break;
2587                         }
2588                         page = cdgetpage(&params);
2589
2590                         page->audio.port[LEFT_PORT].channels = RIGHT_CHANNEL;
2591                         page->audio.port[RIGHT_PORT].channels = RIGHT_CHANNEL;
2592                         page->audio.port[2].channels = 0;
2593                         page->audio.port[3].channels = 0;
2594                         error = cdsetmode(periph, &params);
2595                         free(params.mode_buf, M_TEMP);
2596                 }
2597                 break;
2598         case CDIOCRESUME:
2599                 error = cdpause(periph, 1);
2600                 break;
2601         case CDIOCPAUSE:
2602                 error = cdpause(periph, 0);
2603                 break;
2604         case CDIOCSTART:
2605                 error = cdstartunit(periph, 0);
2606                 break;
2607         case CDIOCCLOSE:
2608                 error = cdstartunit(periph, 1);
2609                 break;
2610         case CDIOCSTOP:
2611                 error = cdstopunit(periph, 0);
2612                 break;
2613         case CDIOCEJECT:
2614                 error = cdstopunit(periph, 1);
2615                 break;
2616         case CDIOCALLOW:
2617                 cdprevent(periph, PR_ALLOW);
2618                 break;
2619         case CDIOCPREVENT:
2620                 cdprevent(periph, PR_PREVENT);
2621                 break;
2622         case CDIOCSETDEBUG:
2623                 /* sc_link->flags |= (SDEV_DB1 | SDEV_DB2); */
2624                 error = ENOTTY;
2625                 break;
2626         case CDIOCCLRDEBUG:
2627                 /* sc_link->flags &= ~(SDEV_DB1 | SDEV_DB2); */
2628                 error = ENOTTY;
2629                 break;
2630         case CDIOCRESET:
2631                 /* return (cd_reset(periph)); */
2632                 error = ENOTTY;
2633                 break;
2634         case CDRIOCREADSPEED:
2635                 error = cdsetspeed(periph, *(u_int32_t *)addr, CDR_MAX_SPEED);
2636                 break;
2637         case CDRIOCWRITESPEED:
2638                 error = cdsetspeed(periph, CDR_MAX_SPEED, *(u_int32_t *)addr);
2639                 break;
2640         case DVDIOCSENDKEY:
2641         case DVDIOCREPORTKEY: {
2642                 struct dvd_authinfo *authinfo;
2643
2644                 authinfo = (struct dvd_authinfo *)addr;
2645
2646                 if (cmd == DVDIOCREPORTKEY)
2647                         error = cdreportkey(periph, authinfo);
2648                 else
2649                         error = cdsendkey(periph, authinfo);
2650                 break;
2651                 }
2652         case DVDIOCREADSTRUCTURE: {
2653                 struct dvd_struct *dvdstruct;
2654
2655                 dvdstruct = (struct dvd_struct *)addr;
2656
2657                 error = cdreaddvdstructure(periph, dvdstruct);
2658
2659                 break;
2660         }
2661         default:
2662                 error = cam_periph_ioctl(periph, cmd, addr, cderror);
2663                 break;
2664         }
2665
2666         cam_periph_unlock(periph);
2667
2668         CAM_DEBUG(periph->path, CAM_DEBUG_TRACE, ("leaving cdioctl\n"));
2669         if (error && bootverbose) {
2670                 printf("scsi_cd.c::ioctl cmd=%08lx error=%d\n", cmd, error);
2671         }
2672
2673         return (error);
2674 }
2675
2676 static void
2677 cdprevent(struct cam_periph *periph, int action)
2678 {
2679         union   ccb *ccb;
2680         struct  cd_softc *softc;
2681         int     error;
2682
2683         CAM_DEBUG(periph->path, CAM_DEBUG_TRACE, ("entering cdprevent\n"));
2684
2685         softc = (struct cd_softc *)periph->softc;
2686
2687         if (((action == PR_ALLOW)
2688           && (softc->flags & CD_FLAG_DISC_LOCKED) == 0)
2689          || ((action == PR_PREVENT)
2690           && (softc->flags & CD_FLAG_DISC_LOCKED) != 0)) {
2691                 return;
2692         }
2693
2694         ccb = cdgetccb(periph, /* priority */ 1);
2695
2696         scsi_prevent(&ccb->csio,
2697                      /*retries*/ 1,
2698                      cddone,
2699                      MSG_SIMPLE_Q_TAG,
2700                      action,
2701                      SSD_FULL_SIZE,
2702                      /* timeout */60000);
2703
2704         error = cdrunccb(ccb, cderror, /*cam_flags*/CAM_RETRY_SELTO,
2705                         /*sense_flags*/SF_RETRY_UA|SF_NO_PRINT);
2706
2707         xpt_release_ccb(ccb);
2708
2709         if (error == 0) {
2710                 if (action == PR_ALLOW)
2711                         softc->flags &= ~CD_FLAG_DISC_LOCKED;
2712                 else
2713                         softc->flags |= CD_FLAG_DISC_LOCKED;
2714         }
2715 }
2716
2717 /*
2718  * XXX: the disk media and sector size is only really able to change
2719  * XXX: while the device is closed.
2720  */
2721 static int
2722 cdcheckmedia(struct cam_periph *periph)
2723 {
2724         struct cd_softc *softc;
2725         struct ioc_toc_header *toch;
2726         struct cd_toc_single leadout;
2727         u_int32_t size, toclen;
2728         int error, num_entries, cdindex;
2729
2730         softc = (struct cd_softc *)periph->softc;
2731
2732         cdprevent(periph, PR_PREVENT);
2733         softc->disk->d_maxsize = DFLTPHYS;
2734         softc->disk->d_sectorsize = 2048;
2735         softc->disk->d_mediasize = 0;
2736
2737         /*
2738          * Get the disc size and block size.  If we can't get it, we don't
2739          * have media, most likely.
2740          */
2741         if ((error = cdsize(periph, &size)) != 0) {
2742                 softc->flags &= ~(CD_FLAG_VALID_MEDIA|CD_FLAG_VALID_TOC);
2743                 cdprevent(periph, PR_ALLOW);
2744                 return (error);
2745         } else
2746                 softc->flags |= CD_FLAG_VALID_MEDIA;
2747
2748         /*
2749          * Now we check the table of contents.  This (currently) is only
2750          * used for the CDIOCPLAYTRACKS ioctl.  It may be used later to do
2751          * things like present a separate entry in /dev for each track,
2752          * like that acd(4) driver does.
2753          */
2754         bzero(&softc->toc, sizeof(softc->toc));
2755         toch = &softc->toc.header;
2756         /*
2757          * We will get errors here for media that doesn't have a table of
2758          * contents.  According to the MMC-3 spec: "When a Read TOC/PMA/ATIP
2759          * command is presented for a DDCD/CD-R/RW media, where the first TOC
2760          * has not been recorded (no complete session) and the Format codes
2761          * 0000b, 0001b, or 0010b are specified, this command shall be rejected
2762          * with an INVALID FIELD IN CDB.  Devices that are not capable of
2763          * reading an incomplete session on DDC/CD-R/RW media shall report
2764          * CANNOT READ MEDIUM - INCOMPATIBLE FORMAT."
2765          *
2766          * So this isn't fatal if we can't read the table of contents, it
2767          * just means that the user won't be able to issue the play tracks
2768          * ioctl, and likely lots of other stuff won't work either.  They
2769          * need to burn the CD before we can do a whole lot with it.  So
2770          * we don't print anything here if we get an error back.
2771          */
2772         error = cdreadtoc(periph, 0, 0, (u_int8_t *)toch, sizeof(*toch),
2773                           SF_NO_PRINT);
2774         /*
2775          * Errors in reading the table of contents aren't fatal, we just
2776          * won't have a valid table of contents cached.
2777          */
2778         if (error != 0) {
2779                 error = 0;
2780                 bzero(&softc->toc, sizeof(softc->toc));
2781                 goto bailout;
2782         }
2783
2784         if (softc->quirks & CD_Q_BCD_TRACKS) {
2785                 toch->starting_track = bcd2bin(toch->starting_track);
2786                 toch->ending_track = bcd2bin(toch->ending_track);
2787         }
2788
2789         /* Number of TOC entries, plus leadout */
2790         num_entries = (toch->ending_track - toch->starting_track) + 2;
2791
2792         if (num_entries <= 0)
2793                 goto bailout;
2794
2795         toclen = num_entries * sizeof(struct cd_toc_entry);
2796
2797         error = cdreadtoc(periph, CD_MSF_FORMAT, toch->starting_track,
2798                           (u_int8_t *)&softc->toc, toclen + sizeof(*toch),
2799                           SF_NO_PRINT);
2800         if (error != 0) {
2801                 error = 0;
2802                 bzero(&softc->toc, sizeof(softc->toc));
2803                 goto bailout;
2804         }
2805
2806         if (softc->quirks & CD_Q_BCD_TRACKS) {
2807                 toch->starting_track = bcd2bin(toch->starting_track);
2808                 toch->ending_track = bcd2bin(toch->ending_track);
2809         }
2810         /*
2811          * XXX KDM is this necessary?  Probably only if the drive doesn't
2812          * return leadout information with the table of contents.
2813          */
2814         cdindex = toch->starting_track + num_entries -1;
2815         if (cdindex == toch->ending_track + 1) {
2816
2817                 error = cdreadtoc(periph, CD_MSF_FORMAT, LEADOUT,
2818                                   (u_int8_t *)&leadout, sizeof(leadout),
2819                                   SF_NO_PRINT);
2820                 if (error != 0) {
2821                         error = 0;
2822                         goto bailout;
2823                 }
2824                 softc->toc.entries[cdindex - toch->starting_track] =
2825                         leadout.entry;
2826         }
2827         if (softc->quirks & CD_Q_BCD_TRACKS) {
2828                 for (cdindex = 0; cdindex < num_entries - 1; cdindex++) {
2829                         softc->toc.entries[cdindex].track =
2830                                 bcd2bin(softc->toc.entries[cdindex].track);
2831                 }
2832         }
2833
2834         softc->flags |= CD_FLAG_VALID_TOC;
2835         softc->disk->d_maxsize = DFLTPHYS;
2836         softc->disk->d_sectorsize = softc->params.blksize;
2837         softc->disk->d_mediasize =
2838             (off_t)softc->params.blksize * softc->params.disksize;
2839
2840 bailout:
2841
2842         /*
2843          * We unconditionally (re)set the blocksize each time the
2844          * CD device is opened.  This is because the CD can change,
2845          * and therefore the blocksize might change.
2846          * XXX problems here if some slice or partition is still
2847          * open with the old size?
2848          */
2849         if ((softc->disk->d_devstat->flags & DEVSTAT_BS_UNAVAILABLE) != 0)
2850                 softc->disk->d_devstat->flags &= ~DEVSTAT_BS_UNAVAILABLE;
2851         softc->disk->d_devstat->block_size = softc->params.blksize;
2852
2853         return (error);
2854 }
2855
2856 static int
2857 cdsize(struct cam_periph *periph, u_int32_t *size)
2858 {
2859         struct cd_softc *softc;
2860         union ccb *ccb;
2861         struct scsi_read_capacity_data *rcap_buf;
2862         int error;
2863
2864         CAM_DEBUG(periph->path, CAM_DEBUG_TRACE, ("entering cdsize\n"));
2865
2866         softc = (struct cd_softc *)periph->softc;
2867
2868         ccb = cdgetccb(periph, /* priority */ 1);
2869
2870         rcap_buf = malloc(sizeof(struct scsi_read_capacity_data),
2871                           M_TEMP, M_WAITOK);
2872
2873         scsi_read_capacity(&ccb->csio,
2874                            /*retries*/ 1,
2875                            cddone,
2876                            MSG_SIMPLE_Q_TAG,
2877                            rcap_buf,
2878                            SSD_FULL_SIZE,
2879                            /* timeout */20000);
2880
2881         error = cdrunccb(ccb, cderror, /*cam_flags*/CAM_RETRY_SELTO,
2882                          /*sense_flags*/SF_RETRY_UA|SF_NO_PRINT);
2883
2884         xpt_release_ccb(ccb);
2885
2886         softc->params.disksize = scsi_4btoul(rcap_buf->addr) + 1;
2887         softc->params.blksize  = scsi_4btoul(rcap_buf->length);
2888         /*
2889          * SCSI-3 mandates that the reported blocksize shall be 2048.
2890          * Older drives sometimes report funny values, trim it down to
2891          * 2048, or other parts of the kernel will get confused.
2892          *
2893          * XXX we leave drives alone that might report 512 bytes, as
2894          * well as drives reporting more weird sizes like perhaps 4K.
2895          */
2896         if (softc->params.blksize > 2048 && softc->params.blksize <= 2352)
2897                 softc->params.blksize = 2048;
2898
2899         free(rcap_buf, M_TEMP);
2900         *size = softc->params.disksize;
2901
2902         return (error);
2903
2904 }
2905
2906 static int
2907 cd6byteworkaround(union ccb *ccb)
2908 {
2909         u_int8_t *cdb;
2910         struct cam_periph *periph;
2911         struct cd_softc *softc;
2912         struct cd_mode_params *params;
2913         int frozen, found;
2914
2915         periph = xpt_path_periph(ccb->ccb_h.path);
2916         softc = (struct cd_softc *)periph->softc;
2917
2918         cdb = ccb->csio.cdb_io.cdb_bytes;
2919
2920         if ((ccb->ccb_h.flags & CAM_CDB_POINTER)
2921          || ((cdb[0] != MODE_SENSE_6)
2922           && (cdb[0] != MODE_SELECT_6)))
2923                 return (0);
2924
2925         /*
2926          * Because there is no convenient place to stash the overall
2927          * cd_mode_params structure pointer, we have to grab it like this.
2928          * This means that ALL MODE_SENSE and MODE_SELECT requests in the
2929          * cd(4) driver MUST go through cdgetmode() and cdsetmode()!
2930          *
2931          * XXX It would be nice if, at some point, we could increase the
2932          * number of available peripheral private pointers.  Both pointers
2933          * are currently used in most every peripheral driver.
2934          */
2935         found = 0;
2936
2937         STAILQ_FOREACH(params, &softc->mode_queue, links) {
2938                 if (params->mode_buf == ccb->csio.data_ptr) {
2939                         found = 1;
2940                         break;
2941                 }
2942         }
2943
2944         /*
2945          * This shouldn't happen.  All mode sense and mode select
2946          * operations in the cd(4) driver MUST go through cdgetmode() and
2947          * cdsetmode()!
2948          */
2949         if (found == 0) {
2950                 xpt_print_path(periph->path);
2951                 printf("mode buffer not found in mode queue!\n");
2952                 return (0);
2953         }
2954
2955         params->cdb_size = 10;
2956         softc->minimum_command_size = 10;
2957         xpt_print_path(ccb->ccb_h.path);
2958         printf("%s(6) failed, increasing minimum CDB size to 10 bytes\n",
2959                (cdb[0] == MODE_SENSE_6) ? "MODE_SENSE" : "MODE_SELECT");
2960
2961         if (cdb[0] == MODE_SENSE_6) {
2962                 struct scsi_mode_sense_10 ms10;
2963                 struct scsi_mode_sense_6 *ms6;
2964                 int len;
2965
2966                 ms6 = (struct scsi_mode_sense_6 *)cdb;
2967
2968                 bzero(&ms10, sizeof(ms10));
2969                 ms10.opcode = MODE_SENSE_10;
2970                 ms10.byte2 = ms6->byte2;
2971                 ms10.page = ms6->page;
2972
2973                 /*
2974                  * 10 byte mode header, block descriptor,
2975                  * sizeof(union cd_pages)
2976                  */
2977                 len = sizeof(struct cd_mode_data_10);
2978                 ccb->csio.dxfer_len = len;
2979
2980                 scsi_ulto2b(len, ms10.length);
2981                 ms10.control = ms6->control;
2982                 bcopy(&ms10, cdb, 10);
2983                 ccb->csio.cdb_len = 10;
2984         } else {
2985                 struct scsi_mode_select_10 ms10;
2986                 struct scsi_mode_select_6 *ms6;
2987                 struct scsi_mode_header_6 *header6;
2988                 struct scsi_mode_header_10 *header10;
2989                 struct scsi_mode_page_header *page_header;
2990                 int blk_desc_len, page_num, page_size, len;
2991
2992                 ms6 = (struct scsi_mode_select_6 *)cdb;
2993
2994                 bzero(&ms10, sizeof(ms10));
2995                 ms10.opcode = MODE_SELECT_10;
2996                 ms10.byte2 = ms6->byte2;
2997
2998                 header6 = (struct scsi_mode_header_6 *)params->mode_buf;
2999                 header10 = (struct scsi_mode_header_10 *)params->mode_buf;
3000
3001                 page_header = find_mode_page_6(header6);
3002                 page_num = page_header->page_code;
3003
3004                 blk_desc_len = header6->blk_desc_len;
3005
3006                 page_size = cdgetpagesize(page_num);
3007
3008                 if (page_size != (page_header->page_length +
3009                     sizeof(*page_header)))
3010                         page_size = page_header->page_length +
3011                                 sizeof(*page_header);
3012
3013                 len = sizeof(*header10) + blk_desc_len + page_size;
3014
3015                 len = min(params->alloc_len, len);
3016
3017                 /*
3018                  * Since the 6 byte parameter header is shorter than the 10
3019                  * byte parameter header, we need to copy the actual mode
3020                  * page data, and the block descriptor, if any, so things wind
3021                  * up in the right place.  The regions will overlap, but
3022                  * bcopy() does the right thing.
3023                  */
3024                 bcopy(params->mode_buf + sizeof(*header6),
3025                       params->mode_buf + sizeof(*header10),
3026                       len - sizeof(*header10));
3027
3028                 /* Make sure these fields are set correctly. */
3029                 scsi_ulto2b(0, header10->data_length);
3030                 header10->medium_type = 0;
3031                 scsi_ulto2b(blk_desc_len, header10->blk_desc_len);
3032
3033                 ccb->csio.dxfer_len = len;
3034
3035                 scsi_ulto2b(len, ms10.length);
3036                 ms10.control = ms6->control;
3037                 bcopy(&ms10, cdb, 10);
3038                 ccb->csio.cdb_len = 10;
3039         }
3040
3041         frozen = (ccb->ccb_h.status & CAM_DEV_QFRZN) != 0;
3042         ccb->ccb_h.status = CAM_REQUEUE_REQ;
3043         xpt_action(ccb);
3044         if (frozen) {
3045                 cam_release_devq(ccb->ccb_h.path,
3046                                  /*relsim_flags*/0,
3047                                  /*openings*/0,
3048                                  /*timeout*/0,
3049                                  /*getcount_only*/0);
3050         }
3051
3052         return (ERESTART);
3053 }
3054
3055 static int
3056 cderror(union ccb *ccb, u_int32_t cam_flags, u_int32_t sense_flags)
3057 {
3058         struct cd_softc *softc;
3059         struct cam_periph *periph;
3060         int error;
3061
3062         periph = xpt_path_periph(ccb->ccb_h.path);
3063         softc = (struct cd_softc *)periph->softc;
3064
3065         error = 0;
3066
3067         /*
3068          * We use a status of CAM_REQ_INVALID as shorthand -- if a 6 byte
3069          * CDB comes back with this particular error, try transforming it
3070          * into the 10 byte version.
3071          */
3072         if ((ccb->ccb_h.status & CAM_STATUS_MASK) == CAM_REQ_INVALID) {
3073                 error = cd6byteworkaround(ccb);
3074         } else if (((ccb->ccb_h.status & CAM_STATUS_MASK) ==
3075                      CAM_SCSI_STATUS_ERROR)
3076          && (ccb->ccb_h.status & CAM_AUTOSNS_VALID)
3077          && (ccb->csio.scsi_status == SCSI_STATUS_CHECK_COND)
3078          && ((ccb->ccb_h.flags & CAM_SENSE_PHYS) == 0)
3079          && ((ccb->ccb_h.flags & CAM_SENSE_PTR) == 0)) {
3080                 int sense_key, error_code, asc, ascq;
3081
3082                 scsi_extract_sense(&ccb->csio.sense_data,
3083                                    &error_code, &sense_key, &asc, &ascq);
3084                 if (sense_key == SSD_KEY_ILLEGAL_REQUEST)
3085                         error = cd6byteworkaround(ccb);
3086         }
3087
3088         if (error == ERESTART)
3089                 return (error);
3090
3091         /*
3092          * XXX
3093          * Until we have a better way of doing pack validation,
3094          * don't treat UAs as errors.
3095          */
3096         sense_flags |= SF_RETRY_UA;
3097         return (cam_periph_error(ccb, cam_flags, sense_flags,
3098                                  &softc->saved_ccb));
3099 }
3100
3101 /*
3102  * Read table of contents
3103  */
3104 static int
3105 cdreadtoc(struct cam_periph *periph, u_int32_t mode, u_int32_t start,
3106           u_int8_t *data, u_int32_t len, u_int32_t sense_flags)
3107 {
3108         struct scsi_read_toc *scsi_cmd;
3109         u_int32_t ntoc;
3110         struct ccb_scsiio *csio;
3111         union ccb *ccb;
3112         int error;
3113
3114         ntoc = len;
3115         error = 0;
3116
3117         ccb = cdgetccb(periph, /* priority */ 1);
3118
3119         csio = &ccb->csio;
3120
3121         cam_fill_csio(csio,
3122                       /* retries */ 1,
3123                       /* cbfcnp */ cddone,
3124                       /* flags */ CAM_DIR_IN,
3125                       /* tag_action */ MSG_SIMPLE_Q_TAG,
3126                       /* data_ptr */ data,
3127                       /* dxfer_len */ len,
3128                       /* sense_len */ SSD_FULL_SIZE,
3129                       sizeof(struct scsi_read_toc),
3130                       /* timeout */ 50000);
3131
3132         scsi_cmd = (struct scsi_read_toc *)&csio->cdb_io.cdb_bytes;
3133         bzero (scsi_cmd, sizeof(*scsi_cmd));
3134
3135         if (mode == CD_MSF_FORMAT)
3136                 scsi_cmd->byte2 |= CD_MSF;
3137         scsi_cmd->from_track = start;
3138         /* scsi_ulto2b(ntoc, (u_int8_t *)scsi_cmd->data_len); */
3139         scsi_cmd->data_len[0] = (ntoc) >> 8;
3140         scsi_cmd->data_len[1] = (ntoc) & 0xff;
3141
3142         scsi_cmd->op_code = READ_TOC;
3143
3144         error = cdrunccb(ccb, cderror, /*cam_flags*/CAM_RETRY_SELTO,
3145                          /*sense_flags*/SF_RETRY_UA | sense_flags);
3146
3147         xpt_release_ccb(ccb);
3148
3149         return(error);
3150 }
3151
3152 static int
3153 cdreadsubchannel(struct cam_periph *periph, u_int32_t mode,
3154                  u_int32_t format, int track,
3155                  struct cd_sub_channel_info *data, u_int32_t len)
3156 {
3157         struct scsi_read_subchannel *scsi_cmd;
3158         struct ccb_scsiio *csio;
3159         union ccb *ccb;
3160         int error;
3161
3162         error = 0;
3163
3164         ccb = cdgetccb(periph, /* priority */ 1);
3165
3166         csio = &ccb->csio;
3167
3168         cam_fill_csio(csio,
3169                       /* retries */ 1,
3170                       /* cbfcnp */ cddone,
3171                       /* flags */ CAM_DIR_IN,
3172                       /* tag_action */ MSG_SIMPLE_Q_TAG,
3173                       /* data_ptr */ (u_int8_t *)data,
3174                       /* dxfer_len */ len,
3175                       /* sense_len */ SSD_FULL_SIZE,
3176                       sizeof(struct scsi_read_subchannel),
3177                       /* timeout */ 50000);
3178
3179         scsi_cmd = (struct scsi_read_subchannel *)&csio->cdb_io.cdb_bytes;
3180         bzero (scsi_cmd, sizeof(*scsi_cmd));
3181
3182         scsi_cmd->op_code = READ_SUBCHANNEL;
3183         if (mode == CD_MSF_FORMAT)
3184                 scsi_cmd->byte1 |= CD_MSF;
3185         scsi_cmd->byte2 = SRS_SUBQ;
3186         scsi_cmd->subchan_format = format;
3187         scsi_cmd->track = track;
3188         scsi_ulto2b(len, (u_int8_t *)scsi_cmd->data_len);
3189         scsi_cmd->control = 0;
3190
3191         error = cdrunccb(ccb, cderror, /*cam_flags*/CAM_RETRY_SELTO,
3192                          /*sense_flags*/SF_RETRY_UA);
3193
3194         xpt_release_ccb(ccb);
3195
3196         return(error);
3197 }
3198
3199
3200 /*
3201  * All MODE_SENSE requests in the cd(4) driver MUST go through this
3202  * routine.  See comments in cd6byteworkaround() for details.
3203  */
3204 static int
3205 cdgetmode(struct cam_periph *periph, struct cd_mode_params *data,
3206           u_int32_t page)
3207 {
3208         struct ccb_scsiio *csio;
3209         struct cd_softc *softc;
3210         union ccb *ccb;
3211         int param_len;
3212         int error;
3213
3214         softc = (struct cd_softc *)periph->softc;
3215
3216         ccb = cdgetccb(periph, /* priority */ 1);
3217
3218         csio = &ccb->csio;
3219
3220         data->cdb_size = softc->minimum_command_size;
3221         if (data->cdb_size < 10)
3222                 param_len = sizeof(struct cd_mode_data);
3223         else
3224                 param_len = sizeof(struct cd_mode_data_10);
3225
3226         /* Don't say we've got more room than we actually allocated */
3227         param_len = min(param_len, data->alloc_len);
3228
3229         scsi_mode_sense_len(csio,
3230                             /* retries */ 1,
3231                             /* cbfcnp */ cddone,
3232                             /* tag_action */ MSG_SIMPLE_Q_TAG,
3233                             /* dbd */ 0,
3234                             /* page_code */ SMS_PAGE_CTRL_CURRENT,
3235                             /* page */ page,
3236                             /* param_buf */ data->mode_buf,
3237                             /* param_len */ param_len,
3238                             /* minimum_cmd_size */ softc->minimum_command_size,
3239                             /* sense_len */ SSD_FULL_SIZE,
3240                             /* timeout */ 50000);
3241
3242         /*
3243          * It would be nice not to have to do this, but there's no
3244          * available pointer in the CCB that would allow us to stuff the
3245          * mode params structure in there and retrieve it in
3246          * cd6byteworkaround(), so we can set the cdb size.  The cdb size
3247          * lets the caller know what CDB size we ended up using, so they
3248          * can find the actual mode page offset.
3249          */
3250         STAILQ_INSERT_TAIL(&softc->mode_queue, data, links);
3251
3252         error = cdrunccb(ccb, cderror, /*cam_flags*/CAM_RETRY_SELTO,
3253                          /*sense_flags*/SF_RETRY_UA);
3254
3255         xpt_release_ccb(ccb);
3256
3257         STAILQ_REMOVE(&softc->mode_queue, data, cd_mode_params, links);
3258
3259         /*
3260          * This is a bit of belt-and-suspenders checking, but if we run
3261          * into a situation where the target sends back multiple block
3262          * descriptors, we might not have enough space in the buffer to
3263          * see the whole mode page.  Better to return an error than
3264          * potentially access memory beyond our malloced region.
3265          */
3266         if (error == 0) {
3267                 u_int32_t data_len;
3268
3269                 if (data->cdb_size == 10) {
3270                         struct scsi_mode_header_10 *hdr10;
3271
3272                         hdr10 = (struct scsi_mode_header_10 *)data->mode_buf;
3273                         data_len = scsi_2btoul(hdr10->data_length);
3274                         data_len += sizeof(hdr10->data_length);
3275                 } else {
3276                         struct scsi_mode_header_6 *hdr6;
3277
3278                         hdr6 = (struct scsi_mode_header_6 *)data->mode_buf;
3279                         data_len = hdr6->data_length;
3280                         data_len += sizeof(hdr6->data_length);
3281                 }
3282
3283                 /*
3284                  * Complain if there is more mode data available than we
3285                  * allocated space for.  This could potentially happen if
3286                  * we miscalculated the page length for some reason, if the
3287                  * drive returns multiple block descriptors, or if it sets
3288                  * the data length incorrectly.
3289                  */
3290                 if (data_len > data->alloc_len) {
3291                         xpt_print_path(periph->path);
3292                         printf("allocated modepage %d length %d < returned "
3293                                "length %d\n", page, data->alloc_len, data_len);
3294
3295                         error = ENOSPC;
3296                 }
3297         }
3298         return (error);
3299 }
3300
3301 /*
3302  * All MODE_SELECT requests in the cd(4) driver MUST go through this
3303  * routine.  See comments in cd6byteworkaround() for details.
3304  */
3305 static int
3306 cdsetmode(struct cam_periph *periph, struct cd_mode_params *data)
3307 {
3308         struct ccb_scsiio *csio;
3309         struct cd_softc *softc;
3310         union ccb *ccb;
3311         int cdb_size, param_len;
3312         int error;
3313
3314         softc = (struct cd_softc *)periph->softc;
3315
3316         ccb = cdgetccb(periph, /* priority */ 1);
3317
3318         csio = &ccb->csio;
3319
3320         error = 0;
3321
3322         /*
3323          * If the data is formatted for the 10 byte version of the mode
3324          * select parameter list, we need to use the 10 byte CDB.
3325          * Otherwise, we use whatever the stored minimum command size.
3326          */
3327         if (data->cdb_size == 10)
3328                 cdb_size = data->cdb_size;
3329         else
3330                 cdb_size = softc->minimum_command_size;
3331
3332         if (cdb_size >= 10) {
3333                 struct scsi_mode_header_10 *mode_header;
3334                 u_int32_t data_len;
3335
3336                 mode_header = (struct scsi_mode_header_10 *)data->mode_buf;
3337
3338                 data_len = scsi_2btoul(mode_header->data_length);
3339
3340                 scsi_ulto2b(0, mode_header->data_length);
3341                 /*
3342                  * SONY drives do not allow a mode select with a medium_type
3343                  * value that has just been returned by a mode sense; use a
3344                  * medium_type of 0 (Default) instead.
3345                  */
3346                 mode_header->medium_type = 0;
3347
3348                 /*
3349                  * Pass back whatever the drive passed to us, plus the size
3350                  * of the data length field.
3351                  */
3352                 param_len = data_len + sizeof(mode_header->data_length);
3353
3354         } else {
3355                 struct scsi_mode_header_6 *mode_header;
3356
3357                 mode_header = (struct scsi_mode_header_6 *)data->mode_buf;
3358
3359                 param_len = mode_header->data_length + 1;
3360
3361                 mode_header->data_length = 0;
3362                 /*
3363                  * SONY drives do not allow a mode select with a medium_type
3364                  * value that has just been returned by a mode sense; use a
3365                  * medium_type of 0 (Default) instead.
3366                  */
3367                 mode_header->medium_type = 0;
3368         }
3369
3370         /* Don't say we've got more room than we actually allocated */
3371         param_len = min(param_len, data->alloc_len);
3372
3373         scsi_mode_select_len(csio,
3374                              /* retries */ 1,
3375                              /* cbfcnp */ cddone,
3376                              /* tag_action */ MSG_SIMPLE_Q_TAG,
3377                              /* scsi_page_fmt */ 1,
3378                              /* save_pages */ 0,
3379                              /* param_buf */ data->mode_buf,
3380                              /* param_len */ param_len,
3381                              /* minimum_cmd_size */ cdb_size,
3382                              /* sense_len */ SSD_FULL_SIZE,
3383                              /* timeout */ 50000);
3384
3385         /* See comments in cdgetmode() and cd6byteworkaround(). */
3386         STAILQ_INSERT_TAIL(&softc->mode_queue, data, links);
3387
3388         error = cdrunccb(ccb, cderror, /*cam_flags*/CAM_RETRY_SELTO,
3389                          /*sense_flags*/SF_RETRY_UA);
3390
3391         xpt_release_ccb(ccb);
3392
3393         STAILQ_REMOVE(&softc->mode_queue, data, cd_mode_params, links);
3394
3395         return (error);
3396 }
3397
3398
3399 static int
3400 cdplay(struct cam_periph *periph, u_int32_t blk, u_int32_t len)
3401 {
3402         struct ccb_scsiio *csio;
3403         union ccb *ccb;
3404         int error;
3405         u_int8_t cdb_len;
3406
3407         error = 0;
3408         ccb = cdgetccb(periph, /* priority */ 1);
3409         csio = &ccb->csio;
3410         /*
3411          * Use the smallest possible command to perform the operation.
3412          */
3413         if ((len & 0xffff0000) == 0) {
3414                 /*
3415                  * We can fit in a 10 byte cdb.
3416                  */
3417                 struct scsi_play_10 *scsi_cmd;
3418
3419                 scsi_cmd = (struct scsi_play_10 *)&csio->cdb_io.cdb_bytes;
3420                 bzero (scsi_cmd, sizeof(*scsi_cmd));
3421                 scsi_cmd->op_code = PLAY_10;
3422                 scsi_ulto4b(blk, (u_int8_t *)scsi_cmd->blk_addr);
3423                 scsi_ulto2b(len, (u_int8_t *)scsi_cmd->xfer_len);
3424                 cdb_len = sizeof(*scsi_cmd);
3425         } else  {
3426                 struct scsi_play_12 *scsi_cmd;
3427
3428                 scsi_cmd = (struct scsi_play_12 *)&csio->cdb_io.cdb_bytes;
3429                 bzero (scsi_cmd, sizeof(*scsi_cmd));
3430                 scsi_cmd->op_code = PLAY_12;
3431                 scsi_ulto4b(blk, (u_int8_t *)scsi_cmd->blk_addr);
3432                 scsi_ulto4b(len, (u_int8_t *)scsi_cmd->xfer_len);
3433                 cdb_len = sizeof(*scsi_cmd);
3434         }
3435         cam_fill_csio(csio,
3436                       /*retries*/2,
3437                       cddone,
3438                       /*flags*/CAM_DIR_NONE,
3439                       MSG_SIMPLE_Q_TAG,
3440                       /*dataptr*/NULL,
3441                       /*datalen*/0,
3442                       /*sense_len*/SSD_FULL_SIZE,
3443                       cdb_len,
3444                       /*timeout*/50 * 1000);
3445
3446         error = cdrunccb(ccb, cderror, /*cam_flags*/CAM_RETRY_SELTO,
3447                          /*sense_flags*/SF_RETRY_UA);
3448
3449         xpt_release_ccb(ccb);
3450
3451         return(error);
3452 }
3453
3454 static int
3455 cdplaymsf(struct cam_periph *periph, u_int32_t startm, u_int32_t starts,
3456           u_int32_t startf, u_int32_t endm, u_int32_t ends, u_int32_t endf)
3457 {
3458         struct scsi_play_msf *scsi_cmd;
3459         struct ccb_scsiio *csio;
3460         union ccb *ccb;
3461         int error;
3462
3463         error = 0;
3464
3465         ccb = cdgetccb(periph, /* priority */ 1);
3466
3467         csio = &ccb->csio;
3468
3469         cam_fill_csio(csio,
3470                       /* retries */ 1,
3471                       /* cbfcnp */ cddone,
3472                       /* flags */ CAM_DIR_NONE,
3473                       /* tag_action */ MSG_SIMPLE_Q_TAG,
3474                       /* data_ptr */ NULL,
3475                       /* dxfer_len */ 0,
3476                       /* sense_len */ SSD_FULL_SIZE,
3477                       sizeof(struct scsi_play_msf),
3478                       /* timeout */ 50000);
3479
3480         scsi_cmd = (struct scsi_play_msf *)&csio->cdb_io.cdb_bytes;
3481         bzero (scsi_cmd, sizeof(*scsi_cmd));
3482
3483         scsi_cmd->op_code = PLAY_MSF;
3484         scsi_cmd->start_m = startm;
3485         scsi_cmd->start_s = starts;
3486         scsi_cmd->start_f = startf;
3487         scsi_cmd->end_m = endm;
3488         scsi_cmd->end_s = ends;
3489         scsi_cmd->end_f = endf;
3490
3491         error = cdrunccb(ccb, cderror, /*cam_flags*/CAM_RETRY_SELTO,
3492                          /*sense_flags*/SF_RETRY_UA);
3493
3494         xpt_release_ccb(ccb);
3495
3496         return(error);
3497 }
3498
3499
3500 static int
3501 cdplaytracks(struct cam_periph *periph, u_int32_t strack, u_int32_t sindex,
3502              u_int32_t etrack, u_int32_t eindex)
3503 {
3504         struct scsi_play_track *scsi_cmd;
3505         struct ccb_scsiio *csio;
3506         union ccb *ccb;
3507         int error;
3508
3509         error = 0;
3510
3511         ccb = cdgetccb(periph, /* priority */ 1);
3512
3513         csio = &ccb->csio;
3514
3515         cam_fill_csio(csio,
3516                       /* retries */ 1,
3517                       /* cbfcnp */ cddone,
3518                       /* flags */ CAM_DIR_NONE,
3519                       /* tag_action */ MSG_SIMPLE_Q_TAG,
3520                       /* data_ptr */ NULL,
3521                       /* dxfer_len */ 0,
3522                       /* sense_len */ SSD_FULL_SIZE,
3523                       sizeof(struct scsi_play_track),
3524                       /* timeout */ 50000);
3525
3526         scsi_cmd = (struct scsi_play_track *)&csio->cdb_io.cdb_bytes;
3527         bzero (scsi_cmd, sizeof(*scsi_cmd));
3528
3529         scsi_cmd->op_code = PLAY_TRACK;
3530         scsi_cmd->start_track = strack;
3531         scsi_cmd->start_index = sindex;
3532         scsi_cmd->end_track = etrack;
3533         scsi_cmd->end_index = eindex;
3534
3535         error = cdrunccb(ccb, cderror, /*cam_flags*/CAM_RETRY_SELTO,
3536                          /*sense_flags*/SF_RETRY_UA);
3537
3538         xpt_release_ccb(ccb);
3539
3540         return(error);
3541 }
3542
3543 static int
3544 cdpause(struct cam_periph *periph, u_int32_t go)
3545 {
3546         struct scsi_pause *scsi_cmd;
3547         struct ccb_scsiio *csio;
3548         union ccb *ccb;
3549         int error;
3550
3551         error = 0;
3552
3553         ccb = cdgetccb(periph, /* priority */ 1);
3554
3555         csio = &ccb->csio;
3556
3557         cam_fill_csio(csio,
3558                       /* retries */ 1,
3559                       /* cbfcnp */ cddone,
3560                       /* flags */ CAM_DIR_NONE,
3561                       /* tag_action */ MSG_SIMPLE_Q_TAG,
3562                       /* data_ptr */ NULL,
3563                       /* dxfer_len */ 0,
3564                       /* sense_len */ SSD_FULL_SIZE,
3565                       sizeof(struct scsi_pause),
3566                       /* timeout */ 50000);
3567
3568         scsi_cmd = (struct scsi_pause *)&csio->cdb_io.cdb_bytes;
3569         bzero (scsi_cmd, sizeof(*scsi_cmd));
3570
3571         scsi_cmd->op_code = PAUSE;
3572         scsi_cmd->resume = go;
3573
3574         error = cdrunccb(ccb, cderror, /*cam_flags*/CAM_RETRY_SELTO,
3575                          /*sense_flags*/SF_RETRY_UA);
3576
3577         xpt_release_ccb(ccb);
3578
3579         return(error);
3580 }
3581
3582 static int
3583 cdstartunit(struct cam_periph *periph, int load)
3584 {
3585         union ccb *ccb;
3586         int error;
3587
3588         error = 0;
3589
3590         ccb = cdgetccb(periph, /* priority */ 1);
3591
3592         scsi_start_stop(&ccb->csio,
3593                         /* retries */ 1,
3594                         /* cbfcnp */ cddone,
3595                         /* tag_action */ MSG_SIMPLE_Q_TAG,
3596                         /* start */ TRUE,
3597                         /* load_eject */ load,
3598                         /* immediate */ FALSE,
3599                         /* sense_len */ SSD_FULL_SIZE,
3600                         /* timeout */ 50000);
3601
3602         error = cdrunccb(ccb, cderror, /*cam_flags*/CAM_RETRY_SELTO,
3603                          /*sense_flags*/SF_RETRY_UA);
3604
3605         xpt_release_ccb(ccb);
3606
3607         return(error);
3608 }
3609
3610 static int
3611 cdstopunit(struct cam_periph *periph, u_int32_t eject)
3612 {
3613         union ccb *ccb;
3614         int error;
3615
3616         error = 0;
3617
3618         ccb = cdgetccb(periph, /* priority */ 1);
3619
3620         scsi_start_stop(&ccb->csio,
3621                         /* retries */ 1,
3622                         /* cbfcnp */ cddone,
3623                         /* tag_action */ MSG_SIMPLE_Q_TAG,
3624                         /* start */ FALSE,
3625                         /* load_eject */ eject,
3626                         /* immediate */ FALSE,
3627                         /* sense_len */ SSD_FULL_SIZE,
3628                         /* timeout */ 50000);
3629
3630         error = cdrunccb(ccb, cderror, /*cam_flags*/CAM_RETRY_SELTO,
3631                          /*sense_flags*/SF_RETRY_UA);
3632
3633         xpt_release_ccb(ccb);
3634
3635         return(error);
3636 }
3637
3638 static int
3639 cdsetspeed(struct cam_periph *periph, u_int32_t rdspeed, u_int32_t wrspeed)
3640 {
3641         struct scsi_set_speed *scsi_cmd;
3642         struct ccb_scsiio *csio;
3643         union ccb *ccb;
3644         int error;
3645
3646         error = 0;
3647         ccb = cdgetccb(periph, /* priority */ 1);
3648         csio = &ccb->csio;
3649
3650         /* Preserve old behavior: units in multiples of CDROM speed */
3651         if (rdspeed < 177)
3652                 rdspeed *= 177;
3653         if (wrspeed < 177)
3654                 wrspeed *= 177;
3655
3656         cam_fill_csio(csio,
3657                       /* retries */ 1,
3658                       /* cbfcnp */ cddone,
3659                       /* flags */ CAM_DIR_NONE,
3660                       /* tag_action */ MSG_SIMPLE_Q_TAG,
3661                       /* data_ptr */ NULL,
3662                       /* dxfer_len */ 0,
3663                       /* sense_len */ SSD_FULL_SIZE,
3664                       sizeof(struct scsi_set_speed),
3665                       /* timeout */ 50000);
3666
3667         scsi_cmd = (struct scsi_set_speed *)&csio->cdb_io.cdb_bytes;
3668         bzero(scsi_cmd, sizeof(*scsi_cmd));
3669
3670         scsi_cmd->opcode = SET_CD_SPEED;
3671         scsi_ulto2b(rdspeed, scsi_cmd->readspeed);
3672         scsi_ulto2b(wrspeed, scsi_cmd->writespeed);
3673
3674         error = cdrunccb(ccb, cderror, /*cam_flags*/CAM_RETRY_SELTO,
3675                          /*sense_flags*/SF_RETRY_UA);
3676
3677         xpt_release_ccb(ccb);
3678
3679         return(error);
3680 }
3681
3682 static int
3683 cdreportkey(struct cam_periph *periph, struct dvd_authinfo *authinfo)
3684 {
3685         union ccb *ccb;
3686         u_int8_t *databuf;
3687         u_int32_t lba;
3688         int error;
3689         int length;
3690
3691         error = 0;
3692         databuf = NULL;
3693         lba = 0;
3694
3695         ccb = cdgetccb(periph, /* priority */ 1);
3696
3697         switch (authinfo->format) {
3698         case DVD_REPORT_AGID:
3699                 length = sizeof(struct scsi_report_key_data_agid);
3700                 break;
3701         case DVD_REPORT_CHALLENGE:
3702                 length = sizeof(struct scsi_report_key_data_challenge);
3703                 break;
3704         case DVD_REPORT_KEY1:
3705                 length = sizeof(struct scsi_report_key_data_key1_key2);
3706                 break;
3707         case DVD_REPORT_TITLE_KEY:
3708                 length = sizeof(struct scsi_report_key_data_title);
3709                 /* The lba field is only set for the title key */
3710                 lba = authinfo->lba;
3711                 break;
3712         case DVD_REPORT_ASF:
3713                 length = sizeof(struct scsi_report_key_data_asf);
3714                 break;
3715         case DVD_REPORT_RPC:
3716                 length = sizeof(struct scsi_report_key_data_rpc);
3717                 break;
3718         case DVD_INVALIDATE_AGID:
3719                 length = 0;
3720                 break;
3721         default:
3722                 error = EINVAL;
3723                 goto bailout;
3724                 break; /* NOTREACHED */
3725         }
3726
3727         if (length != 0) {
3728                 databuf = malloc(length, M_DEVBUF, M_WAITOK | M_ZERO);
3729         } else
3730                 databuf = NULL;
3731
3732
3733         scsi_report_key(&ccb->csio,
3734                         /* retries */ 1,
3735                         /* cbfcnp */ cddone,
3736                         /* tag_action */ MSG_SIMPLE_Q_TAG,
3737                         /* lba */ lba,
3738                         /* agid */ authinfo->agid,
3739                         /* key_format */ authinfo->format,
3740                         /* data_ptr */ databuf,
3741                         /* dxfer_len */ length,
3742                         /* sense_len */ SSD_FULL_SIZE,
3743                         /* timeout */ 50000);
3744
3745         error = cdrunccb(ccb, cderror, /*cam_flags*/CAM_RETRY_SELTO,
3746                          /*sense_flags*/SF_RETRY_UA);
3747
3748         if (error != 0)
3749                 goto bailout;
3750
3751         if (ccb->csio.resid != 0) {
3752                 xpt_print_path(periph->path);
3753                 printf("warning, residual for report key command is %d\n",
3754                        ccb->csio.resid);
3755         }
3756
3757         switch(authinfo->format) {
3758         case DVD_REPORT_AGID: {
3759                 struct scsi_report_key_data_agid *agid_data;
3760
3761                 agid_data = (struct scsi_report_key_data_agid *)databuf;
3762
3763                 authinfo->agid = (agid_data->agid & RKD_AGID_MASK) >>
3764                         RKD_AGID_SHIFT;
3765                 break;
3766         }
3767         case DVD_REPORT_CHALLENGE: {
3768                 struct scsi_report_key_data_challenge *chal_data;
3769
3770                 chal_data = (struct scsi_report_key_data_challenge *)databuf;
3771
3772                 bcopy(chal_data->challenge_key, authinfo->keychal,
3773                       min(sizeof(chal_data->challenge_key),
3774                           sizeof(authinfo->keychal)));
3775                 break;
3776         }
3777         case DVD_REPORT_KEY1: {
3778                 struct scsi_report_key_data_key1_key2 *key1_data;
3779
3780                 key1_data = (struct scsi_report_key_data_key1_key2 *)databuf;
3781
3782                 bcopy(key1_data->key1, authinfo->keychal,
3783                       min(sizeof(key1_data->key1), sizeof(authinfo->keychal)));
3784                 break;
3785         }
3786         case DVD_REPORT_TITLE_KEY: {
3787                 struct scsi_report_key_data_title *title_data;
3788
3789                 title_data = (struct scsi_report_key_data_title *)databuf;
3790
3791                 authinfo->cpm = (title_data->byte0 & RKD_TITLE_CPM) >>
3792                         RKD_TITLE_CPM_SHIFT;
3793                 authinfo->cp_sec = (title_data->byte0 & RKD_TITLE_CP_SEC) >>
3794                         RKD_TITLE_CP_SEC_SHIFT;
3795                 authinfo->cgms = (title_data->byte0 & RKD_TITLE_CMGS_MASK) >>
3796                         RKD_TITLE_CMGS_SHIFT;
3797                 bcopy(title_data->title_key, authinfo->keychal,
3798                       min(sizeof(title_data->title_key),
3799                           sizeof(authinfo->keychal)));
3800                 break;
3801         }
3802         case DVD_REPORT_ASF: {
3803                 struct scsi_report_key_data_asf *asf_data;
3804
3805                 asf_data = (struct scsi_report_key_data_asf *)databuf;
3806
3807                 authinfo->asf = asf_data->success & RKD_ASF_SUCCESS;
3808                 break;
3809         }
3810         case DVD_REPORT_RPC: {
3811                 struct scsi_report_key_data_rpc *rpc_data;
3812
3813                 rpc_data = (struct scsi_report_key_data_rpc *)databuf;
3814
3815                 authinfo->reg_type = (rpc_data->byte4 & RKD_RPC_TYPE_MASK) >>
3816                         RKD_RPC_TYPE_SHIFT;
3817                 authinfo->vend_rsts =
3818                         (rpc_data->byte4 & RKD_RPC_VENDOR_RESET_MASK) >>
3819                         RKD_RPC_VENDOR_RESET_SHIFT;
3820                 authinfo->user_rsts = rpc_data->byte4 & RKD_RPC_USER_RESET_MASK;
3821                 authinfo->region = rpc_data->region_mask;
3822                 authinfo->rpc_scheme = rpc_data->rpc_scheme1;
3823                 break;
3824         }
3825         case DVD_INVALIDATE_AGID:
3826                 break;
3827         default:
3828                 /* This should be impossible, since we checked above */
3829                 error = EINVAL;
3830                 goto bailout;
3831                 break; /* NOTREACHED */
3832         }
3833 bailout:
3834         if (databuf != NULL)
3835                 free(databuf, M_DEVBUF);
3836
3837         xpt_release_ccb(ccb);
3838
3839         return(error);
3840 }
3841
3842 static int
3843 cdsendkey(struct cam_periph *periph, struct dvd_authinfo *authinfo)
3844 {
3845         union ccb *ccb;
3846         u_int8_t *databuf;
3847         int length;
3848         int error;
3849
3850         error = 0;
3851         databuf = NULL;
3852
3853         ccb = cdgetccb(periph, /* priority */ 1);
3854
3855         switch(authinfo->format) {
3856         case DVD_SEND_CHALLENGE: {
3857                 struct scsi_report_key_data_challenge *challenge_data;
3858
3859                 length = sizeof(*challenge_data);
3860
3861                 challenge_data = malloc(length, M_DEVBUF, M_WAITOK | M_ZERO);
3862
3863                 databuf = (u_int8_t *)challenge_data;
3864
3865                 scsi_ulto2b(length - sizeof(challenge_data->data_len),
3866                             challenge_data->data_len);
3867
3868                 bcopy(authinfo->keychal, challenge_data->challenge_key,
3869                       min(sizeof(authinfo->keychal),
3870                           sizeof(challenge_data->challenge_key)));
3871                 break;
3872         }
3873         case DVD_SEND_KEY2: {
3874                 struct scsi_report_key_data_key1_key2 *key2_data;
3875
3876                 length = sizeof(*key2_data);
3877
3878                 key2_data = malloc(length, M_DEVBUF, M_WAITOK | M_ZERO);
3879
3880                 databuf = (u_int8_t *)key2_data;
3881
3882                 scsi_ulto2b(length - sizeof(key2_data->data_len),
3883                             key2_data->data_len);
3884
3885                 bcopy(authinfo->keychal, key2_data->key1,
3886                       min(sizeof(authinfo->keychal), sizeof(key2_data->key1)));
3887
3888                 break;
3889         }
3890         case DVD_SEND_RPC: {
3891                 struct scsi_send_key_data_rpc *rpc_data;
3892
3893                 length = sizeof(*rpc_data);
3894
3895                 rpc_data = malloc(length, M_DEVBUF, M_WAITOK | M_ZERO);
3896
3897                 databuf = (u_int8_t *)rpc_data;
3898
3899                 scsi_ulto2b(length - sizeof(rpc_data->data_len),
3900                             rpc_data->data_len);
3901
3902                 rpc_data->region_code = authinfo->region;
3903                 break;
3904         }
3905         default:
3906                 error = EINVAL;
3907                 goto bailout;
3908                 break; /* NOTREACHED */
3909         }
3910
3911         scsi_send_key(&ccb->csio,
3912                       /* retries */ 1,
3913                       /* cbfcnp */ cddone,
3914                       /* tag_action */ MSG_SIMPLE_Q_TAG,
3915                       /* agid */ authinfo->agid,
3916                       /* key_format */ authinfo->format,
3917                       /* data_ptr */ databuf,
3918                       /* dxfer_len */ length,
3919                       /* sense_len */ SSD_FULL_SIZE,
3920                       /* timeout */ 50000);
3921
3922         error = cdrunccb(ccb, cderror, /*cam_flags*/CAM_RETRY_SELTO,
3923                          /*sense_flags*/SF_RETRY_UA);
3924
3925 bailout:
3926
3927         if (databuf != NULL)
3928                 free(databuf, M_DEVBUF);
3929
3930         xpt_release_ccb(ccb);
3931
3932         return(error);
3933 }
3934
3935 static int
3936 cdreaddvdstructure(struct cam_periph *periph, struct dvd_struct *dvdstruct)
3937 {
3938         union ccb *ccb;
3939         u_int8_t *databuf;
3940         u_int32_t address;
3941         int error;
3942         int length;
3943
3944         error = 0;
3945         databuf = NULL;
3946         /* The address is reserved for many of the formats */
3947         address = 0;
3948
3949         ccb = cdgetccb(periph, /* priority */ 1);
3950
3951         switch(dvdstruct->format) {
3952         case DVD_STRUCT_PHYSICAL:
3953                 length = sizeof(struct scsi_read_dvd_struct_data_physical);
3954                 break;
3955         case DVD_STRUCT_COPYRIGHT:
3956                 length = sizeof(struct scsi_read_dvd_struct_data_copyright);
3957                 break;
3958         case DVD_STRUCT_DISCKEY:
3959                 length = sizeof(struct scsi_read_dvd_struct_data_disc_key);
3960                 break;
3961         case DVD_STRUCT_BCA:
3962                 length = sizeof(struct scsi_read_dvd_struct_data_bca);
3963                 break;
3964         case DVD_STRUCT_MANUFACT:
3965                 length = sizeof(struct scsi_read_dvd_struct_data_manufacturer);
3966                 break;
3967         case DVD_STRUCT_CMI:
3968                 error = ENODEV;
3969                 goto bailout;
3970 #ifdef notyet
3971                 length = sizeof(struct scsi_read_dvd_struct_data_copy_manage);
3972                 address = dvdstruct->address;
3973 #endif
3974                 break; /* NOTREACHED */
3975         case DVD_STRUCT_PROTDISCID:
3976                 length = sizeof(struct scsi_read_dvd_struct_data_prot_discid);
3977                 break;
3978         case DVD_STRUCT_DISCKEYBLOCK:
3979                 length = sizeof(struct scsi_read_dvd_struct_data_disc_key_blk);
3980                 break;
3981         case DVD_STRUCT_DDS:
3982                 length = sizeof(struct scsi_read_dvd_struct_data_dds);
3983                 break;
3984         case DVD_STRUCT_MEDIUM_STAT:
3985                 length = sizeof(struct scsi_read_dvd_struct_data_medium_status);
3986                 break;
3987         case DVD_STRUCT_SPARE_AREA:
3988                 length = sizeof(struct scsi_read_dvd_struct_data_spare_area);
3989                 break;
3990         case DVD_STRUCT_RMD_LAST:
3991                 error = ENODEV;
3992                 goto bailout;
3993 #ifdef notyet
3994                 length = sizeof(struct scsi_read_dvd_struct_data_rmd_borderout);
3995                 address = dvdstruct->address;
3996 #endif
3997                 break; /* NOTREACHED */
3998         case DVD_STRUCT_RMD_RMA:
3999                 error = ENODEV;
4000                 goto bailout;
4001 #ifdef notyet
4002                 length = sizeof(struct scsi_read_dvd_struct_data_rmd);
4003                 address = dvdstruct->address;
4004 #endif
4005                 break; /* NOTREACHED */
4006         case DVD_STRUCT_PRERECORDED:
4007                 length = sizeof(struct scsi_read_dvd_struct_data_leadin);
4008                 break;
4009         case DVD_STRUCT_UNIQUEID:
4010                 length = sizeof(struct scsi_read_dvd_struct_data_disc_id);
4011                 break;
4012         case DVD_STRUCT_DCB:
4013                 error = ENODEV;
4014                 goto bailout;
4015 #ifdef notyet
4016                 length = sizeof(struct scsi_read_dvd_struct_data_dcb);
4017                 address = dvdstruct->address;
4018 #endif
4019                 break; /* NOTREACHED */
4020         case DVD_STRUCT_LIST:
4021                 /*
4022                  * This is the maximum allocation length for the READ DVD
4023                  * STRUCTURE command.  There's nothing in the MMC3 spec
4024                  * that indicates a limit in the amount of data that can
4025                  * be returned from this call, other than the limits
4026                  * imposed by the 2-byte length variables.
4027                  */
4028                 length = 65535;
4029                 break;
4030         default:
4031                 error = EINVAL;
4032                 goto bailout;
4033                 break; /* NOTREACHED */
4034         }
4035
4036         if (length != 0) {
4037                 databuf = malloc(length, M_DEVBUF, M_WAITOK | M_ZERO);
4038         } else
4039                 databuf = NULL;
4040
4041         scsi_read_dvd_structure(&ccb->csio,
4042                                 /* retries */ 1,
4043                                 /* cbfcnp */ cddone,
4044                                 /* tag_action */ MSG_SIMPLE_Q_TAG,
4045                                 /* lba */ address,
4046                                 /* layer_number */ dvdstruct->layer_num,
4047                                 /* key_format */ dvdstruct->format,
4048                                 /* agid */ dvdstruct->agid,
4049                                 /* data_ptr */ databuf,
4050                                 /* dxfer_len */ length,
4051                                 /* sense_len */ SSD_FULL_SIZE,
4052                                 /* timeout */ 50000);
4053
4054         error = cdrunccb(ccb, cderror, /*cam_flags*/CAM_RETRY_SELTO,
4055                          /*sense_flags*/SF_RETRY_UA);
4056
4057         if (error != 0)
4058                 goto bailout;
4059
4060         switch(dvdstruct->format) {
4061         case DVD_STRUCT_PHYSICAL: {
4062                 struct scsi_read_dvd_struct_data_layer_desc *inlayer;
4063                 struct dvd_layer *outlayer;
4064                 struct scsi_read_dvd_struct_data_physical *phys_data;
4065
4066                 phys_data =
4067                         (struct scsi_read_dvd_struct_data_physical *)databuf;
4068                 inlayer = &phys_data->layer_desc;
4069                 outlayer = (struct dvd_layer *)&dvdstruct->data;
4070
4071                 dvdstruct->length = sizeof(*inlayer);
4072
4073                 outlayer->book_type = (inlayer->book_type_version &
4074                         RDSD_BOOK_TYPE_MASK) >> RDSD_BOOK_TYPE_SHIFT;
4075                 outlayer->book_version = (inlayer->book_type_version &
4076                         RDSD_BOOK_VERSION_MASK);
4077                 outlayer->disc_size = (inlayer->disc_size_max_rate &
4078                         RDSD_DISC_SIZE_MASK) >> RDSD_DISC_SIZE_SHIFT;
4079                 outlayer->max_rate = (inlayer->disc_size_max_rate &
4080                         RDSD_MAX_RATE_MASK);
4081                 outlayer->nlayers = (inlayer->layer_info &
4082                         RDSD_NUM_LAYERS_MASK) >> RDSD_NUM_LAYERS_SHIFT;
4083                 outlayer->track_path = (inlayer->layer_info &
4084                         RDSD_TRACK_PATH_MASK) >> RDSD_TRACK_PATH_SHIFT;
4085                 outlayer->layer_type = (inlayer->layer_info &
4086                         RDSD_LAYER_TYPE_MASK);
4087                 outlayer->linear_density = (inlayer->density &
4088                         RDSD_LIN_DENSITY_MASK) >> RDSD_LIN_DENSITY_SHIFT;
4089                 outlayer->track_density = (inlayer->density &
4090                         RDSD_TRACK_DENSITY_MASK);
4091                 outlayer->bca = (inlayer->bca & RDSD_BCA_MASK) >>
4092                         RDSD_BCA_SHIFT;
4093                 outlayer->start_sector = scsi_3btoul(inlayer->main_data_start);
4094                 outlayer->end_sector = scsi_3btoul(inlayer->main_data_end);
4095                 outlayer->end_sector_l0 =
4096                         scsi_3btoul(inlayer->end_sector_layer0);
4097                 break;
4098         }
4099         case DVD_STRUCT_COPYRIGHT: {
4100                 struct scsi_read_dvd_struct_data_copyright *copy_data;
4101
4102                 copy_data = (struct scsi_read_dvd_struct_data_copyright *)
4103                         databuf;
4104
4105                 dvdstruct->cpst = copy_data->cps_type;
4106                 dvdstruct->rmi = copy_data->region_info;
4107                 dvdstruct->length = 0;
4108
4109                 break;
4110         }
4111         default:
4112                 /*
4113                  * Tell the user what the overall length is, no matter
4114                  * what we can actually fit in the data buffer.
4115                  */
4116                 dvdstruct->length = length - ccb->csio.resid -
4117                         sizeof(struct scsi_read_dvd_struct_data_header);
4118
4119                 /*
4120                  * But only actually copy out the smaller of what we read
4121                  * in or what the structure can take.
4122                  */
4123                 bcopy(databuf + sizeof(struct scsi_read_dvd_struct_data_header),
4124                       dvdstruct->data,
4125                       min(sizeof(dvdstruct->data), dvdstruct->length));
4126                 break;
4127         }
4128 bailout:
4129
4130         if (databuf != NULL)
4131                 free(databuf, M_DEVBUF);
4132
4133         xpt_release_ccb(ccb);
4134
4135         return(error);
4136 }
4137
4138 void
4139 scsi_report_key(struct ccb_scsiio *csio, u_int32_t retries,
4140                 void (*cbfcnp)(struct cam_periph *, union ccb *),
4141                 u_int8_t tag_action, u_int32_t lba, u_int8_t agid,
4142                 u_int8_t key_format, u_int8_t *data_ptr, u_int32_t dxfer_len,
4143                 u_int8_t sense_len, u_int32_t timeout)
4144 {
4145         struct scsi_report_key *scsi_cmd;
4146
4147         scsi_cmd = (struct scsi_report_key *)&csio->cdb_io.cdb_bytes;
4148         bzero(scsi_cmd, sizeof(*scsi_cmd));
4149         scsi_cmd->opcode = REPORT_KEY;
4150         scsi_ulto4b(lba, scsi_cmd->lba);
4151         scsi_ulto2b(dxfer_len, scsi_cmd->alloc_len);
4152         scsi_cmd->agid_keyformat = (agid << RK_KF_AGID_SHIFT) |
4153                 (key_format & RK_KF_KEYFORMAT_MASK);
4154
4155         cam_fill_csio(csio,
4156                       retries,
4157                       cbfcnp,
4158                       /*flags*/ (dxfer_len == 0) ? CAM_DIR_NONE : CAM_DIR_IN,
4159                       tag_action,
4160                       /*data_ptr*/ data_ptr,
4161                       /*dxfer_len*/ dxfer_len,
4162                       sense_len,
4163                       sizeof(*scsi_cmd),
4164                       timeout);
4165 }
4166
4167 void
4168 scsi_send_key(struct ccb_scsiio *csio, u_int32_t retries,
4169               void (*cbfcnp)(struct cam_periph *, union ccb *),
4170               u_int8_t tag_action, u_int8_t agid, u_int8_t key_format,
4171               u_int8_t *data_ptr, u_int32_t dxfer_len, u_int8_t sense_len,
4172               u_int32_t timeout)
4173 {
4174         struct scsi_send_key *scsi_cmd;
4175
4176         scsi_cmd = (struct scsi_send_key *)&csio->cdb_io.cdb_bytes;
4177         bzero(scsi_cmd, sizeof(*scsi_cmd));
4178         scsi_cmd->opcode = SEND_KEY;
4179
4180         scsi_ulto2b(dxfer_len, scsi_cmd->param_len);
4181         scsi_cmd->agid_keyformat = (agid << RK_KF_AGID_SHIFT) |
4182                 (key_format & RK_KF_KEYFORMAT_MASK);
4183
4184         cam_fill_csio(csio,
4185                       retries,
4186                       cbfcnp,
4187                       /*flags*/ CAM_DIR_OUT,
4188                       tag_action,
4189                       /*data_ptr*/ data_ptr,
4190                       /*dxfer_len*/ dxfer_len,
4191                       sense_len,
4192                       sizeof(*scsi_cmd),
4193                       timeout);
4194 }
4195
4196
4197 void
4198 scsi_read_dvd_structure(struct ccb_scsiio *csio, u_int32_t retries,
4199                         void (*cbfcnp)(struct cam_periph *, union ccb *),
4200                         u_int8_t tag_action, u_int32_t address,
4201                         u_int8_t layer_number, u_int8_t format, u_int8_t agid,
4202                         u_int8_t *data_ptr, u_int32_t dxfer_len,
4203                         u_int8_t sense_len, u_int32_t timeout)
4204 {
4205         struct scsi_read_dvd_structure *scsi_cmd;
4206
4207         scsi_cmd = (struct scsi_read_dvd_structure *)&csio->cdb_io.cdb_bytes;
4208         bzero(scsi_cmd, sizeof(*scsi_cmd));
4209         scsi_cmd->opcode = READ_DVD_STRUCTURE;
4210
4211         scsi_ulto4b(address, scsi_cmd->address);
4212         scsi_cmd->layer_number = layer_number;
4213         scsi_cmd->format = format;
4214         scsi_ulto2b(dxfer_len, scsi_cmd->alloc_len);
4215         /* The AGID is the top two bits of this byte */
4216         scsi_cmd->agid = agid << 6;
4217
4218         cam_fill_csio(csio,
4219                       retries,
4220                       cbfcnp,
4221                       /*flags*/ CAM_DIR_IN,
4222                       tag_action,
4223                       /*data_ptr*/ data_ptr,
4224                       /*dxfer_len*/ dxfer_len,
4225                       sense_len,
4226                       sizeof(*scsi_cmd),
4227                       timeout);
4228 }